Ingredients

2 tbsp. extra-virgin olive oil, divided

1 lb. ground chicken

1 egg

1 Garlic clove, minced

kosher salt

Freshly ground black pepper

1/2 tsp. fennel seeds, ground

1/2 tsp. crushed red pepper flakes

1/2 c. panko bread crumbs

1/4 c. Finely chopped fresh parsley

2 c. good-quality marinara sauce

12 oz. baby spinach

Juice of 1/2 lemon

8 slices mozzarella (from 8 oz. ball)

8 slider buns, heated

Preparation

Step 1Preheat oven to 450° and oil a small metal baking dish.Step 2In a medium bowl, using your hands, combine chicken, egg, garlic, salt, pepper, fennel seeds, crushed red pepper flakes, bread crumbs, and parsley until combined.Step 3Divide mixture into 8 meatballs (use an ice cream scoop for a perfect shape) and place close together in baking dish. Bake 12 minutes.Step 4Pour sauce over meatballs, then return to oven for 3 minutes more, until sauce is heated through, and meatballs register an internal temperature of 165°. Heat broiler.Step 5Heat remaining 1 tablespoon olive oil in a large skillet. Cook spinach until just wilted, 2 minutes. Season with lemon juice and salt and pepper.Step 6Top each meatball with mozzarella and place under broiler 1 to 2 minutes, until cheese is melted and bubbling. Make sliders by topping meatballs on buns and topping with cooked spinach.