INGREDIENTS
2 tbsp
extra virgin olive oil, divided
1/4 cup
onion, diced
2 cloves
garlic, minced
1 1/2 lb
ground beef
1/4 cup
panko breadcrumbs
1/4 cup
parmesan cheese
1
whole egg
1 tbsp
parsley, chopped
2 cups
tomato sauce
6
slices of mozzarella cheese (depending on how many meatballs you make)
basil for serving, if desired
slider buns, toasted