Easy Cheeseburger Casserole
["1 lb. lean ground beef, browned and drained", "1 c. chopped onions, cooked with meat", "1/2 c. catsup", "2 Tbsp. Worcestershire sauce", "1 1/2 c. plus 2 Tbsp. Bisquick baking mix, divided", "4 to 5 Tbsp. water", "1 c. grated Cheddar cheese", "1 (2 1/2 oz.) jar sliced mushrooms, drained (optional)"]
["Place cooked meat and onions into Pam-sprayed 2-quart baking dish.", "Add catsup, Worcestershire sauce, mushrooms (if desired) and 2 tablespoons Bisquick.", "Stir well and set aside.", "Combine remaining Bisquick with enough water to form a soft dough.", "With fingertips dipped in Bisquick, press dough into bottom and up sides of casserole.", "Fill with meat mixture.", "Sprinkle on cheese. Bake in preheated 425\u00b0 oven 20 minutes."]
["lean ground beef", "onions", "catsup", "Worcestershire sauce", "Bisquick baking mix", "water", "Cheddar cheese", "mushrooms"]