Cheeseburger Pie

Ingredients

• 1 lb. ground beef, browned and drained
• 1/2 c. tomato sauce
• 1/4 c. green pepper
• 1/2 tsp. oregano
• 1/4 c. chopped onion
• 1/2 c. bread crumbs
• salt and pepper to taste
• 1 (9-inch) pie crust
• 2 c. grated Cheddar cheese
• 1 beaten egg
• 1/4 c. milk
• 1/2 tsp. dry mustard
• 1/2 tsp. Worcestershire sauce