Mom's Fluffy Meatloaf

1 pound ground beef

1/2 pound ground pork

2 cups bread, cubed

1 cup milk

1 egg

4 tablespoons minced onion

2 teaspoons salt

1/4 teaspoon dry mustard

1/4 teaspoon pepper

1/8 teaspoon sage

3 tablespoons ketchup

Preheat oven to 350 degrees.  Mix all ingredients thoroughly.  Pack into a greased loaf pan.  Spread ketchup over top.  Bake for 1 1/4 to 1 1/2 hours, until no longer pink.