The 'heat' comes from a hefty amount of prepared horseradish.

Hot Meat Loaf

2 pounds lean ground beef
1 cup onion, chopped
2 cups soft bread crumbs
1 teaspoon salt
2 tablespoons Worcestershire sauce
2 large eggs
1/4 cup prepared horseradish
1 teaspoon dry mustard
1 onion, sliced
1 green bell pepper, seeded and sliced
1/2 cup tomato ketchup

1. Combine ground beef, chopped onion, soft bread crumbs, salt, Worcestershire sauce, beaten eggs, horseradish, and dry mustard. Form into a loaf. Place sliced onion and sliced green bell pepper on top followed with ketchup.
2. Bake at 350°F (175°C) for 45 minutes, or until done.

Makes 8 servings.