Meatball Sub Sandwich15 mins prepServes 3A delicious meatball sub sandwich made with ground beef, egg, breadcrumbs, bell pepper, onion, and marinara sauce, served in brioche hotdog buns.US standardMetric-3 servings+SharePrintWhat you need1 lb ground beef1 egg¼ cup breadcrumb1 bell pepper1 onion1 seasoning1 marinara sauce1 brioche bunsCheckout experienceCheckout experienceInstacartCheckout experienceInstacartShop ingredientsInstructionsView original recipe