Meat Loaf Puff

Ingredients

• 1 beaten egg
• 3/4 c. milk
• 1 1/2 c. soft bread crumbs (2 slices)
• 1/2 c. chopped onion
• 1 1/2 tsp. salt
• 1/8 tsp. pepper
• 1 1/2 lb. ground beef
• 2 medium tomatoes, peeled and sliced
• 6 slices American cheese
• 3 egg whites
• 1 c. dairy sour cream
• 3/4 c. all-purpose flour
• 1/2 tsp. salt
• dash of pepper
• 3 egg yolks