Follow these simple steps to create your Meatball Sub Cupcakes:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Prepare a muffin tin with grease or cupcake liners.

2. Combine Meatball Ingredients: In a mixing bowl, combine ground beef, breadcrumbs, Parmesan cheese, parsley, egg, garlic powder, onion powder, Italian seasoning, salt, and pepper. Mix well until fully incorporated.

3. Form Meatballs: Roll the mixture into small meatballs, about 1 inch in diameter. This recipe will yield approximately 12-15 meatballs.

4. Cook Meatballs: In a skillet over medium heat, cook the meatballs for about 10 minutes, turning occasionally until browned. Remove from heat and let cool slightly.

5. Prepare Cupcake Batter: In a separate bowl, whisk together flour, baking powder, garlic powder, salt, and sugar. In another bowl, combine milk, vegetable oil, and eggs. Mix the wet and dry ingredients until just combined.

6. Assemble Cupcakes: Place a small amount of cupcake batter into each muffin cup, just enough to cover the bottom. Then, place one meatball on top of the batter in each cup.

7. Add Sauce and Cheese: Spoon marinara sauce over each meatball, then sprinkle shredded mozzarella cheese on top. Finally, cover with more cupcake batter until the cups are about 3/4 full.

8. Bake: Place the muffin tin in the preheated oven and bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean.

9. Cool: Allow the cupcakes to cool in the tin for about 10 minutes. Then, gently remove and place them on a wire rack to cool further.

10. Optional Garnish: If desired, sprinkle with additional chopped parsley or Parmesan cheese before serving.

Creating these Meatball Sub Cupcakes has never been easier! They make a hearty meal filled with flavor and satisfaction.