7 oz. Sirloin Steak | Red Lobster 7 oz. Sirloin Steak | Red Lobster Price & Nutrition Price: $18.99 - 19.99 | 320 - 380 Calories Red Lobster 7 oz. Sirloin – Price, Nutrition & Allergen Red Lobster fire-grills a 7 oz sirloin to juicy perfection, delivering 46 g protein and only 320 - 380 calories for about $18.99 - 19.99. You get bold steakhouse flavour with two sides—call your local restaurant to lock in this lean, protein-packed plate before tonight’s rush! View Full Red Lobster Menu Order Now