Flavorful & Low Carb: The Ultimate Fajita Lettuce Burger Recipe
Craving the vibrant, sizzling flavors of fajitas but looking for a healthier, low-carb twist on your favorite burger? Look no further than this incredible Fajita Lettuce Burger! This recipe combines the juicy perfection of BUBBA angus beef burgers with a generous topping of perfectly seasoned, tender fajita-style bell peppers and onions, all nestled within a crisp lettuce wrap. It’s a deliciously satisfying meal that proves healthy eating doesn’t mean sacrificing flavor or feeling full. Prepare to transform your burger night with this easy, delightful, and guilt-free option!

Why You’ll Love This Low-Carb Fajita Burger
There’s an undeniable magic in the way bell peppers and onions transform when cooked fajita-style. They become wonderfully tender, slightly caramelized, and incredibly flavorful, especially when infused with robust taco seasoning. The inspiration for this burger came from a simple realization: these fantastic fajita toppings would be an absolute dream on a burger patty. This recipe is brought to you in partnership with Bubba Burger, making it even easier to create a gourmet-style meal in minutes.
If you’ve enjoyed our previous burger creations, you know we love to get creative! You might recall the zesty Tex Mex Burger, piled high with creamy guacamole and fresh pico de gallo, or the Easy Avocado Burger, featuring a rich guacamole topping on a classic BUBBA burger. And for those who appreciate a bold flavor combination, the Easy Blue Cheese Burger masterfully blends beef with tangy blue cheese. BUBBA burgers offer so many delicious possibilities, and this Fajita Lettuce Burger is another fantastic addition to your repertoire. It’s perfect for anyone seeking a satisfying, low-carb meal without compromising on taste or quality.
The Appeal of a Lettuce Wrap Burger
Opting for a lettuce wrap instead of a traditional bun isn’t just about cutting carbs; it’s about embracing a refreshing and light texture that allows the other ingredients to shine. The crispness of the lettuce provides a fantastic contrast to the juicy burger and soft fajita vegetables, adding an extra layer of enjoyment to every bite. It’s an ideal choice for those following a keto or low-carb diet, or simply looking to incorporate more vegetables into their meals. Plus, it makes for a beautiful presentation!

Simple & Flavorful Recipe Ingredients You’ll Need
Crafting this delicious Fajita Lettuce Burger requires just a few key ingredients. The beauty lies in their quality and how they come together to create a burst of flavor. Here’s an overview of the simple ingredients we’re using to bring this fantastic low-carb burger to life. For exact ingredient amounts and printable instructions, be sure to jump to the recipe card below.
- BUBBA Angus Burgers: The star of our show! These pre-formed patties are known for their convenience and consistent quality, delivering a juicy, flavorful base for your burger. They cook beautifully from frozen, making meal prep a breeze.
- Lettuce: Large, crisp iceberg lettuce leaves are ideal for wrapping. They provide that essential crunch and a refreshing counterpoint to the rich burger and savory fajita toppings.
- Tomato: Slices of fresh tomato add a touch of sweetness and acidity, balancing the other flavors and adding a lovely visual pop.
- Fajita Peppers and Onions: A colorful mix of bell peppers (think red, yellow, green for variety and nutrition) and thinly sliced onions. These vegetables soften and sweeten as they cook, absorbing the taco seasoning beautifully.
- Taco Seasoning: This is what gives our fajita vegetables their signature Tex-Mex flavor. Using homemade taco seasoning allows you to control the spice level and ingredients, though a good quality store-bought mix works perfectly too.

How to Make a Delicious Fajita Lettuce Burger (Step-by-Step)
Making this Fajita Lettuce Burger is incredibly straightforward, whether you prefer grilling or using a skillet. The key is to cook your BUBBA burgers to juicy perfection and ensure your fajita vegetables are tender and flavorful. Here’s how to do it:
Step 1: Cook Your BUBBA Burgers (Grill Method): Preheat your outdoor grill to medium-high heat. Place the BUBBA Angus Burgers directly on the grill grates straight from the freezer – no thawing needed, which is one of the best conveniences of these burgers! Grill for approximately 5-6 minutes on each side. You’ll know they’re ready to flip when the delicious juices begin to rise to the top surface of the burger. Continue cooking until the internal temperature reaches a safe and delicious 160 degrees F, ensuring a perfectly cooked patty.
Step 2: Cook Your BUBBA Burgers (Skillet Method): If you’re cooking indoors, heat a large non-stick or cast iron skillet over medium-high heat. Similar to grilling, place your Original BUBBA burgers directly into the hot skillet from the freezer. Cook for 5-6 minutes per side. Just like on the grill, watch for the juices to start appearing on top – that’s your cue to flip! Cook until the internal temperature reaches 160 degrees F for a safe and succulent burger.
Step 3: Prepare the Fajita Bell Pepper and Onion Mix: While your burgers are cooking, it’s time to whip up those vibrant fajita veggies. Start by thinly slicing your bell peppers (any color works, a mix is great!) and onion. In a separate large skillet, heat 2 tablespoons of olive oil over medium-high heat. Once hot, add the sliced bell peppers and onion. Sprinkle in 2 teaspoons of your favorite taco seasoning. Sauté the vegetables for about 10 minutes, stirring occasionally, until they are beautifully soft and slightly caramelized but still have a little bite. Taste and adjust the seasoning if needed, adding a pinch of salt and pepper to enhance the flavors.
Step 4: Assemble Your Fajita Lettuce Burger: Now for the best part – assembly! Lay a large, crisp iceberg lettuce leaf flat on your plate. This will serve as your bun. Top the lettuce leaf with a fresh slice of tomato, your perfectly cooked BUBBA burger patty, and then generously spoon about 1/4 of the flavorful fajita bell pepper and onion mix over the burger. You can fold the lettuce around the burger to create a handheld wrap, or enjoy it open-faced with a knife and fork. Enjoy every delicious, low-carb bite!
Tips for the Perfect Fajita Lettuce Burger
- Don’t Overcrowd the Pan: When cooking the fajita vegetables, work in batches if necessary to avoid steaming them. A single layer allows them to get a nice sear and caramelization.
- Customize Your Spice: Adjust the amount of taco seasoning to your preference. For extra heat, add a pinch of cayenne pepper or a dash of hot sauce to the vegetables.
- Cheese Please! While keeping it low-carb, a slice of Monterey Jack, cheddar, or a sprinkle of cotija cheese melted on top of the burger during the last minute of cooking would be a delicious addition.
- Avocado Power: A dollop of fresh guacamole or a few slices of ripe avocado would complement the fajita flavors beautifully and add healthy fats.
- Cooling Creaminess: A spoonful of plain Greek yogurt or a light sour cream on top can provide a refreshing contrast to the warm, spiced flavors.
- Prep Ahead: Slice your bell peppers and onions in advance and store them in an airtight container in the fridge. This makes weeknight cooking even faster!

What to Serve with these Fajita Lettuce Burgers
While these Fajita Lettuce Burgers are incredibly satisfying on their own, pairing them with the right side dishes can elevate your meal to a whole new level. Since the burger itself is low-carb, feel free to get creative with your accompaniments, whether you want to keep it light or add a bit more substance. Here are some of my favorite suggestions:
Refreshing Salads: I often enjoy serving at least two different salads with my burgers for variety and freshness. Some excellent choices that complement the Tex-Mex flavors of the fajita burger include this Summer Orzo Pasta Salad, which offers a delightful texture, a vibrant Mediterranean Bean Salad for a protein and fiber boost, a zesty Mexican Street Corn Salad that echoes the theme, or a light and peppery Lemon Arugula Salad with Pine Nuts for a sophisticated touch.
Hearty Potatoes: For those who love a classic burger and potato combo, there are many ways to make it special. I particularly enjoy these savory Air Fryer Twice Baked Potatoes, creamy and comforting Gouda Smashed Potatoes, or for a kick, these flavorful Spicy Lebanese Potatoes. Each offers a unique texture and flavor profile that pairs wonderfully with the robust burger.
Wholesome Vegetables: Incorporating more vegetables is always a good idea! When making burgers, I love to serve a simple yet delicious cooked vegetable on the side. These Mediterranean Roasted Vegetables bring a medley of flavors, Simple Garlic Parmesan Green Beans are a quick and tasty classic, or for something unique, try the earthy notes of Turmeric Cauliflower.

Storage Tips for Leftovers
If you happen to have any Fajita Lettuce Burgers leftover, you can store them to enjoy later. Simply place the cooked burgers and the fajita vegetable mix in separate airtight containers in the refrigerator. They will stay fresh for up to 3 days. When reheating, it’s best to warm the burger patty and vegetables separately, then assemble with fresh lettuce and tomato if desired, to maintain the best texture.
Explore More Delicious Burger Recipes
If you loved this Fajita Lettuce Burger, you’re in for a treat! We have a wide array of burger recipes to suit every palate and occasion. Whether you’re in the mood for poultry, exotic flavors, or classic beef with a twist, these recipes will inspire your next meal.
Turkey
Sweet and Spicy Turkey Burgers
Simple Dinner Recipes
Mediterranean Burger with Mint Yogurt Sauce
Beef
Easy Mediterranean Hamburgers
Beef
Feta Burger with Tzatziki
Frequently Asked Questions (FAQ)
Here are some common questions you might have about making this delicious Fajita Lettuce Burger:
Q: Is this Fajita Lettuce Burger suitable for a keto diet?
A: Yes, absolutely! By using a lettuce wrap instead of a traditional bun and focusing on the protein from the BUBBA Angus Burger and low-carb vegetables like bell peppers and onions, this recipe is inherently keto-friendly and a fantastic option for those managing their carbohydrate intake.
Q: Can I use different types of BUBBA burgers?
A: Definitely! While this recipe features BUBBA Angus Burgers for their rich flavor, you can easily substitute them with BUBBA Turkey Burgers or BUBBA Veggie Burgers if you prefer poultry or a plant-based option. The cooking times might vary slightly, so always check the internal temperature for doneness (165°F for turkey).
Q: How can I make my own taco seasoning from scratch?
A: Making your own taco seasoning is easy and allows you to control the ingredients. A typical homemade blend includes chili powder, cumin, paprika, onion powder, garlic powder, oregano, and a pinch of salt and black pepper. For specific measurements and a detailed guide, check out our recipe for homemade taco seasoning.
Q: What kind of lettuce is best for a lettuce wrap?
A: Large, sturdy leaves are best for holding your burger and toppings. Iceberg lettuce is a classic choice for its crisp texture and bowl-like shape. Butter lettuce or romaine hearts can also work well, offering a slightly softer, more pliable wrap.
Q: Can I prepare the fajita vegetables in advance?
A: Yes, you can! The fajita bell pepper and onion mix can be cooked up to 2-3 days in advance and stored in an airtight container in the refrigerator. Reheat gently in a skillet or microwave before assembling your burgers. This is a great meal prep hack for busy weeknights.
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Fajita Lettuce Burger

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Ingredients
- 4 BUBBA Angus Burgers
- 4 large iceberg lettuce leaves
- 4 slices of tomato
For the Fajita Vegetables
- 1 large bell peppers, seeds removed, thinly sliced {you can use 1/4 of each different color of bell pepper}
- 1/4 of a red onion, thinly sliced
- 2 teaspoons of homemade taco seasoning
Instructions
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For the Grill: Heat the grill to medium high heat. Cook your BUBBA angus burgers on the grill straight from the freezer (no thawing required). Grill for 5-6 minutes on each side. When the juices begin to rise to the top of the burger it is time to flip them. Burgers are done when they reach an internal temperature of 160 degrees F.
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For the Skillet: Heat a large non-stick or cast iron skillet over medium high heat. Cook your Original BUBBA burgers on the skillet straight from the freezer (no thawing required). Cook for 5-6 minutes on each side. When the juices begin to rise to the top of the burger it is time to flip them. Burgers are done when they reach an internal temperature of 160 degrees F.
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For the Fajita Mix: Thinly slice the bell peppers and onion. Heat 2 Tablespoons of olive oil in a large skillet over medium hight heat. Add the bell peppers and onion along with 2 teaspoons of taco seasoning. Sauté for about 10 minutes or until the bell peppers and onion are soft. Taste and adjust seasoning and add salt and pepper.
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Assemble: Place the iceberg lettuce leaf on a plate. Top with a slice of tomato, the burger and 1/4 of the fajita bell pepper mix. Enjoy!
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
This is a sponsored post written by me on behalf of BUBBA burger. All opinions are 100% mine.