Open-Faced Burgers With Onion-Mushroom Topping - cooking recipe

Ingredients

2 teaspoons olive oil
1 medium sweet onion, sliced and separated into rings
2 (8 ounce) packages presliced mushrooms
1/2 teaspoon salt
2 teaspoons balsamic vinegar
1 1/2 tablespoons paprika
1/2 teaspoon dried thyme
1/4 teaspoon ground red pepper
1/4 teaspoon fresh ground black pepper
1 lb ground round
2 English muffins, split and toasted

Preparation

Preheat grill.
Heat oil in a large nonstick skillet over medium-high heat.
Add onion, and cook for 5 minutes or until golden.
Add mushrooms and salt; cook 5 minutes, stirring constantly.
Add vinegar, remove mixture from pan.
Set aside.
Combine the paprika and the next 4 ingredients (paprika through black pepper).
Divide the ground meat into 4 equal portion, shaping each into a 1/2 inch thick patty.
Coat patties with spice mixture.
Grill patties 4 minutes on each side or until done.
Place burger patties on muffin halves, and top each burger with 1/4 cup onion mixture.