Creating Italian Sliders is straightforward if you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).

2. Cook the Sausage: In a large skillet over medium heat, add the olive oil and heat. Once hot, crumble the Italian sausage into the skillet. Cook until browned, about 7-10 minutes.

3. Add Seasonings: Stir in the marinara sauce, oregano, and garlic powder. Let simmer for an additional 2-3 minutes.

4. Prepare Buns: While the sausage is simmering, slice the slider buns in half horizontally and place the bottoms in a baking dish.

5. Layer the Mixture: Spoon the sausage mixture over the bottom halves of the buns evenly.

6. Add Cheeses: Sprinkle the shredded mozzarella cheese and grated Parmesan cheese over the sausage mixture.

7. Top with Buns: Place the tops of the slider buns on the cheese layer.

8. Bake: Cover the dish with aluminum foil and bake in the preheated oven for 15 minutes. Remove the foil and bake for an additional 5-10 minutes, or until the cheese is bubbling and golden.

9. Garnish: Remove from the oven and let cool for a few minutes. Garnish with fresh basil leaves if desired.

10. Slice and Serve: Using a sharp knife, slice the sliders and serve warm.

These steps will guide you in creating incredible Italian Sliders that are sure to impress everyone.