Cheesy Beef Pie

Ingredients

• 1 lb. ground beef
• 1 medium onion, chopped
• 1 medium green pepper, chopped
• 1 (8 oz.) can tomato sauce
• 1 (4 oz.) can mushrooms, drained
• 1/4 tsp. salt
• 1/4 tsp. garlic salt
• 1/4 tsp. chili powder
• dash of pepper
• 1 (8 oz.) can crescent rolls
• 1 egg, slightly beaten
• 3 c. shredded Cheddar cheese