01 -
Stir together all the meatball ingredients and make 24 small balls. Fry them in a pan with oil, turning often to brown evenly.
02 -
Pour marinara over the meatballs, cover them up, and on medium-low heat, let it cook for 15 minutes. The meatballs should hit 160°F inside.
03 -
Put sandwich buns on a pan. Move your oven rack to sit around 6 inches under your broiler.
04 -
Put 3 meatballs in each bun, drizzle marinara, and sprinkle mozzarella on top. Broil for 2-3 minutes so the cheese fully melts.