Ingredients
4 servings
- •1 pound ground sirloin
- •1 tablespoon Worcestershire sauce
- •2 cloves garlic, minced, or more to taste
- •½ teaspoon salt
- •½ teaspoon ground black pepper
- •3 tablespoons unsalted butter
- •3 tablespoons olive oil
- •2 medium onions, sliced
- •cooking spray
- •4 slices Cheddar cheese
- •4 teaspoons Dijon mustard (Optional)
- •8 slices rye bread, lightly toasted
Instructions
- Mix sirloin, Worcestershire sauce, garlic, salt, and pepper together by hand in a medium bowl. Form into 4 hamburger patties and wrap in plastic wrap. Place in the refrigerator until flavors have melded, 4 hours to overnight.
- Heat butter and olive oil in a large skillet over medium heat until melted. Add onions and saute until they begin to caramelize, about 15 minutes, reducing heat to medium-low if they seem to be sizzling too much.
- Spray a large skillet with cooking spray and heat over medium heat. Place hamburger patties in the skillet and cook for 3 minutes per side, topping each patty with a slice of Cheddar cheese after flipping.
- Place patties on toasted rye bread. Top with warm onions, Dijon mustard, and remaining bread.
Nutritional Facts
Per 4 servings
- Calories: 621
- Carbohydrate: 39g
- Fat: 37g
- Fiber: 5g
- Protein: 33g
- Sugar: 5g