Preheat your oven to 375°F (190°C).

In a large mixing bowl, combine the ground beef, breadcrumbs, Parmesan cheese, parsley, egg, garlic powder, salt, and pepper.

Using your hands, shape the mixture into 1-inch meatballs.

Place the meatballs on a baking sheet and bake for 20 minutes.

While the meatballs bake, combine the grape jelly and barbecue sauce in a saucepan over medium heat.

After 20 minutes, remove the meatballs from the oven and place them in the sauce.

Reduce the heat to low and let the meatballs simmer in the sauce for an additional 5 minutes.

Transfer the meatballs to a serving dish and spoon extra sauce over the top.