In a large skillet over medium heat, combine ground beef and ground hot sausage, breaking apart as it cooks for 5-7 minutes until browned.

While the meat is cooking, cube Velveeta cheese into small pieces for smooth melting.

Drain excess grease from the skillet to keep the filling rich but not overly greasy.

Return the skillet to low heat, stir in the cubed Velveeta cheese until melted, then add Worcestershire sauce, oregano, garlic salt, and salt to taste, mixing until bubbling.

Preheat the broiler, line a baking sheet with slices of party rye bread.

Scoop a generous 2-tablespoon portion of meat and cheese mixture onto each slice.

Broil the baking sheet for 2-3 minutes or bake at 350°F for 15-18 minutes until golden brown.

Carefully remove from oven, sprinkle with chopped parsley if desired, and serve warm.