Meatballs in Caramelized Onion Gravy Ingredients 1-1/4 lbs lean ground beef, room temperature 2 eggs, lightly beaten 3/4 cup panko 1/2 cup buttermilk 1 teaspoon garlic salt 1-1/2 teaspoons Italian seasoning, divided use 1/2 teaspoon black pepper, divided use 2 tablespoons olive oil 1 very large (softball size) onion, halved and thinly sliced 2