Cheeseburger Pie

Ingredients

• 1 lb. ground beef
• 1/2 tsp. oregano
• 1 1/2 tsp. salt
• 1/4 tsp. pepper
• 1/4 c. chopped onion
• 1/4 c. chopped green pepper
• 1/2 c. fine bread crumbs
• 1 (8 oz.) can tomato sauce
• 1 (9-inch) unbaked pie shell
• 2 c. grated sharp cheese
• 1 egg, beaten
• 1/4 c. milk
• 1/2 tsp. dry mustard
• 1 tsp. Worcestershire sauce
• 1/2 c. chili sauce