Bison Burgers with Caramelized Onions

Bison Burgers with Caramelized Onions

Juicy, all-natural ground bison patties topped with deeply caramelized sweet onions and served lettuce-wrapped with fresh tomato and mixed greens. A high-protein, grain-free American classic made with nothing but whole, natural ingredients.

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⏱️
Prep

15m

👥
Serves

4

LevelEasy
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Ingredients

  • 1 1/2 lbs ground bison (80/20 lean-to-fat ratio)
  • 2 large sweet onions, thinly sliced
  • 2 tablespoons grass-fed butter
  • 3 cloves garlic, minced
  • 1 teaspoon sea salt
  • 1/2 teaspoon freshly ground black pepper
  • 1/2 teaspoon garlic powder
  • 8 large butter lettuce or iceberg leaves (for wrapping)
  • 2 large ripe tomatoes, sliced
  • 2 cups mixed greens or arugula
  • 1 tablespoon avocado oil (for grill or pan)
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Instructions

  1. 1

    Caramelize the Onions

    Melt butter in a large skillet over medium-low heat. Add the thinly sliced sweet onions and a pinch of sea salt. Cook slowly, stirring every 5 minutes, for 25–30 minutes until the onions are deeply golden, sweet, and jammy. Add the minced garlic in the last 5 minutes of cooking. Do not rush this step — low and slow heat is the key to true caramelization.

  2. 2

    Form the Bison Patties

    While the onions cook, gently combine the ground bison with sea salt, black pepper, and garlic powder in a bowl. Avoid overworking the meat. Divide into 4 equal portions and form into patties about 3/4 inch thick. Press a slight indent in the center of each patty with your thumb to prevent doming during cooking.

  3. 3

    Heat the Cooking Surface

    Heat a cast-iron skillet or outdoor grill over high heat until very hot. Brush the cooking surface lightly with avocado oil. Bison is leaner than beef, so a high-heat sear locks in the juices quickly.

  4. 4

    Cook the Bison Patties

    Place the patties on the hot skillet or grill. Cook for 3–4 minutes on the first side without moving, until a crust forms and the patty releases easily. Flip once and cook for another 2–3 minutes for medium (internal temperature of 145–155°F). Because bison is very lean, avoid cooking past medium to prevent dryness.

  5. 5

    Rest the Patties

    Transfer the cooked bison patties to a plate and loosely tent with foil. Allow them to rest for 3–4 minutes so the juices redistribute throughout the meat before assembling.

  6. 6

    Assemble and Serve

    Lay two large lettuce leaves per serving as a wrap base. Place a rested bison patty on the lettuce, top generously with caramelized onions, sliced tomato, and a handful of mixed greens or arugula. Wrap the lettuce around the burger and serve immediately.

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Chef's Tips

Bison is significantly leaner than beef, so it cooks faster and dries out quickly — pull it off the heat at medium doneness (145°F) and let the carryover cooking do the rest during the rest period. Take the full 25–30 minutes for the caramelized onions; properly caramelized onions add a natural sweetness that eliminates any need for condiments. For extra richness, top with a slice of ripe avocado.

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Nutrition Facts

Calories430
Protein40g
Carbs12g
Fat24g

Frequently Asked Questions

Everything you need to know about making this bison burgers with caramelized onions

How long does it take to make Bison Burgers with Caramelized Onions?

The listed total time is 50 minutes. Prep time is 15 minutes and cooking time is 35 minutes. Follow the instructions for any resting or chilling steps.

How many servings does this Bison Burgers with Caramelized Onions recipe make?

This recipe yields 4 servings.

What is the difficulty level of this Bison Burgers with Caramelized Onions recipe?

The listed difficulty level is easy.