Preheat your oven to 350°F.
In a large skillet over medium heat, cook the ground sausage until browned and fully cooked, breaking it apart with a spatula. Drain any excess grease.
In a mixing bowl, combine the cooked sausage, softened cream cheese, shredded cheddar cheese, Worcestershire sauce, garlic powder, onion powder, and chopped parsley. Mix until well combined.
Spread about 1 tablespoon of the sausage mixture onto each slice of cocktail rye bread. Place the prepared bread slices on a baking sheet.
Bake in the preheated oven for 15-20 minutes, or until the cheese is melted and the edges of the bread are crispy.
Remove from the oven and let cool for a few minutes before serving. Enjoy warm.