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Story Behind the Recipe

During a summer road trip through the Midwest, Emily discovered the legendary Oklahoma Fried Onion Burger at a small diner. Captivated by the burger’s crispy, caramelized onions and juicy beef patty, she was determined to recreate it at home. Being a keto enthusiast, Emily decided to give this classic burger a low-carb twist. After experimenting with various ingredients and techniques, she perfected her Keto Oklahoma Fried Onion Burger. This keto-friendly version retained all the rich flavors and textures of the original, becoming a favorite at family cookouts and get-togethers. Emily’s creation is a testament to the fact that you can enjoy classic American comfort food while sticking to a healthy lifestyle.

Key Considerations

  1. Low-Carb Buns: Use lettuce wraps, portobello mushroom caps, or keto-friendly buns to keep the burger low-carb.
  2. Quality Ingredients: Opt for high-quality beef and fresh onions to enhance the burger’s flavor.
  3. Portion Sizes: Keto recipes can be calorie-dense, so be mindful of serving sizes to maintain dietary goals.
  4. Cooking Techniques: Properly caramelize the onions and cook the beef patties to achieve the perfect texture.

Tips and Tricks

  1. Caramelizing Onions: Slice the onions thinly and cook them slowly to bring out their natural sweetness and achieve a golden, crispy texture.
  2. Beef Selection: Use 80/20 ground beef for the right balance of flavor and juiciness.
  3. Seasoning: Season the beef generously with salt and pepper to enhance the flavor.
  4. Assembly: Let the burger patties rest for a few minutes after cooking to retain their juices.


  • For the Burgers:
    • 1 lb ground beef (80/20)
    • 1 large onion, thinly sliced
    • 1 tbsp butter or olive oil
    • Salt and pepper to taste
    • 4 slices of cheddar cheese (optional)
    • Lettuce leaves or keto-friendly buns for serving
    • Pickles, mustard, and other keto-friendly condiments (optional)


  1. Prepare the Onions:
    • Heat butter or olive oil in a large skillet over medium heat.
    • Add the thinly sliced onions and cook, stirring occasionally, until they are caramelized and crispy, about 15-20 minutes. Season with a pinch of salt. Remove from skillet and set aside.
  2. Form the Patties:
    • Divide the ground beef into four equal portions and shape each into a ball. Flatten them slightly to form patties.
    • Season each patty generously with salt and pepper on both sides.
  3. Cook the Burgers:
    • Heat the same skillet over medium-high heat.
    • Place the patties in the skillet, pressing down gently with a spatula.
    • Pile a portion of the caramelized onions on top of each patty and press down again to embed the onions into the beef.
    • Cook until the patties are browned and crispy on the bottom, about 3-4 minutes.
    • Flip the patties and cook for another 3-4 minutes, or until they reach your desired doneness.
    • If using cheese, place a slice on each patty during the last minute of cooking and cover the skillet to melt the cheese.
  4. Assemble the Burgers:
    • Place each patty on a lettuce leaf or keto-friendly bun.
    • Add pickles, mustard, and other condiments as desired.
    • Serve immediately.

Storage Methods

  • Refrigeration: Store leftover patties and onions in an airtight container in the refrigerator for up to 3 days. Reheat in a skillet over medium heat until warmed through.
  • Freezing: You can freeze cooked patties. Wrap each patty individually in plastic wrap and store in a freezer-safe bag for up to 3 months. Thaw in the refrigerator overnight and reheat in a skillet.


  1. Cheese Options: Use different types of cheese like Swiss or pepper jack for a flavor twist.
  2. Vegetable Additions: Add sautéed mushrooms or bell peppers for extra flavor and texture.
  3. Spicy Kick: Add jalapeños or a dash of hot sauce for a spicier version.
  4. Protein Alternatives: Use ground turkey or chicken for a different protein option.

Health Benefits of Ingredients

  1. Ground Beef: High in protein and essential nutrients like iron and vitamin B12, supporting muscle growth and energy levels.
  2. Onions: Rich in antioxidants and vitamins, promoting heart health and reducing inflammation.
  3. Lettuce: Low in calories and carbs, providing vitamins A and K, which support eye and bone health.
  4. Cheddar Cheese: Provides calcium and protein, essential for bone health and muscle maintenance.

Enjoy this Keto Oklahoma Fried Onion Burger, a delicious and healthy alternative to the classic burger, perfect for satisfying your cravings while maintaining your low-carb lifestyle.

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