Pizza Burgers - cooking recipe

Ingredients

1 lb. ground beef
1/3 c. chopped onion
1 can pizza sauce
2 1/2 oz. drained mushrooms (optional)
1 tsp. oregano
1 c. Mozzarella cheese
buns

Preparation

Brown ground beef and onion. Drain. Stir in pizza sauce, oregano and mushrooms. Refrigerate for 2 or more hours. Stir in Mozzarella cheese. Put mixture on buns and bake open-faced in a 400\u00b0 oven for 10 minutes.