Creating these fantastic Zombie Meatball Sliders can be simple if you follow these steps:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).
2. Mix Ingredients: In a large bowl, combine the ground beef, breadcrumbs, Parmesan cheese, parsley, egg, garlic, onion powder, Italian seasoning, salt, and pepper. Mix everything until just combined.
3. Form Meatballs: Shape the mixture into small meatballs, about the size of a golf ball, and place them on a baking sheet.
4. Bake Meatballs: Bake in the preheated oven for 20 minutes, or until cooked through.
5. Prepare Sauce: While the meatballs are baking, heat the marinara sauce in a small saucepan over medium heat until warmed through.
6. Assemble Sliders: Once the meatballs are done, slice the slider buns in half. Place a meatball on the bottom half of each bun.
7. Add Sauce and Cheese: Spoon a tablespoon of marinara sauce over each meatball, then sprinkle with shredded mozzarella cheese.
8. Broil: Place the assembled sliders under the broiler for 2-3 minutes or until the cheese is melted and bubbly.
9. Add “Eyes”: Once removed from the oven, place a sliced black olive on top of each meatball to create the “eyes.”
10. Garnish: Finish with fresh basil leaves for added color and flavor.
11. Serve: Place the top half of the buns over the meatballs, and your Zombie Meatball Sliders are ready to go!