Meatlovers! If adding protein, season with a pinch of salt and pepper and cook with 1 tsp. olive oil in a large non-stick pan over medium-high heat. If using Impossible burger, break up burger until heated through, 4-6 minutes. If using chicken breasts, pat dry and, on a separate cutting board, cut into 1” pieces. Stir occasionally until chicken reaches minimum internal temperature, 5-7 minutes. Add to casserole as desired.