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.
15m
4
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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)
Instructions
- 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
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
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
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
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
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.
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.
Nutrition Facts
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?
This recipe takes 50 minutes total time, including 15 minutes prep time and 35 minutes cooking time.
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?
This recipe is rated as Easy difficulty level, making it perfect for beginners.
Can I make substitutions in this Bison Burgers with Caramelized Onions recipe?
Yes, you can make substitutions, but they may affect the final result. Common substitutions include using different types of ingredients for dietary restrictions or personal preferences.
Can I make this bison burgers with caramelized onions ahead of time?
Yes! You can prepare this bison burgers with caramelized onions up to 1 day ahead. Assemble the dish completely, cover with foil, and refrigerate. When ready to serve, bring to room temperature for 30 minutes, then bake as directed, adding an extra 10-15 minutes to the cooking time if needed.
How do I store leftover bison burgers with caramelized onions?
Store leftover bison burgers with caramelized onions covered in the refrigerator for up to 4 days. To reheat, cover with foil and warm in a 350°F oven for 15-20 minutes, or microwave individual portions for 1-2 minutes until heated through.
What side dishes go well with bison burgers with caramelized onions?
This bison burgers with caramelized onions pairs beautifully with a simple green salad, roasted vegetables like broccoli or Brussels sprouts, or crusty bread. For a complete meal, serve alongside grilled chicken or a protein of your choice.
Can I freeze bison burgers with caramelized onions?
Yes, this bison burgers with caramelized onions freezes well for up to 3 months. Wrap tightly in plastic wrap and aluminum foil, or store in freezer-safe containers. Thaw overnight in the refrigerator before reheating in the oven at 350°F until warmed through.