Beef And Chicken Enchiladas

Ingredients

• 1 small onion, chopped
• 1 lb. lean ground beef
• 1/2 lb. grated Cheddar cheese
• 1 can cream of chicken soup
• 1 (5.33 oz.) can evaporated milk
• 1/2 lb. Velveeta cheese
• 1 (4 oz.) can chopped green chilies
• 1 (2 oz.) jar chopped pimientos
• 1 doz. tortillas