Good-Cooking - Mexican Layer Casserole

Ingredients

• 1 can tomato sauce, divided
• 1 pound lean ground beef
• 1/2 teaspoon garlic salt
• 1/2 teaspoon pepper
• 1 small sweet onion, finely cut
• 1/2 package taco seasoning mix
• 1 1/2 cups canned corn, drained
• 6 to 8 medium/large potatoes, boiled and mashed with butter and milk
• 1 teaspoon paprika
• 1 cup grated Cheddar cheese