Slide into dinner like a pro with these mozzarella-stuffed little bites of heaven. Seasoned ground beef enrobes cheese for maximum tastiness, then gets topped with pizza sauce and served on a toasted bun. Paired with a heaping pile of baked fries dusted in Parmesan, every bite of gooey goodness will send you to your own personal nirvana.
Cut potato into ¼" sticks. Place on one prepared baking sheet and toss with 2 tsp. olive oil, and a pinch of salt and pepper. Spread into a single layer and bake until lightly browned, 20 minutes, tossing fries halfway through. Remove from oven. Fries will finish cooking in a later step. While fries bake, prepare meatballs.
Form and Fill the Meatballs
Thoroughly combine ground beef, panko, half the Parmesan cheese (reserve remaining for fries), ½ tsp. salt, and a pinch of pepper in a mixing bowl. Divide into six equal-sized balls. Press your thumb into center of each ball and place a mozzarella ball into the well. Close meat around mozzarella, re-form into a ball, and place on one side of second prepared baking sheet. Form a tight seal so cheese stays inside meatball.
Roast Meatballs and Toast Buns
Roast meatballs until lightly browned, 20-25 minutes. Don't worry if cheese leaks out of meatballs while roasting. Carefully, place slider buns on other half of baking sheet and bake until buns are toasted and meatballs reach a minimum internal temperature of 160 degrees, 2-3 minutes.
Finish the Fries
After fries have cooked 20 minutes, toss again. Continue baking until golden brown, 10-12 minutes. Remove from oven and sprinkle with most of remaining Parmesan (reserve a pinch for garnish).
Heat the Sauce
Add pizza sauce to a small pot and place over medium heat. Bring sauce to a gentle boil, 2-3 minutes. Remove from burner.
Finish the Dish
Spoon sauce on bottom slider bun and place meatball in sauce. Top with a spoonful of sauce and garnish with reserved Parmesan. Top with top bun. Serve alongside Parmesan fries.