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Outback Steakhouse
Outback Center-Cut Sirloin 11 oz
Outback Center-Cut Sirloin 11 oz at Outback Steakhouse has 390 calories, 70g protein, 1g carbs and 12g fat — sourced from Outback Steakhouse Nutrition, not AI guesses. 11 oz center-cut sirloin steak, no sides.
At Outback Steakhouse, the Outback Center-Cut Sirloin 11 oz is a strong cutting pick — high protein for relatively few calories and keto- and low-carb-friendly. That works out to 17.9g of protein per 100 calories — 16g above the 54g Outback Steakhouse average. Its macros land at roughly 72% of calories from protein, 1% from carbs and 28% from fat.
Source: Outback Steakhouse Nutrition ↗, last verified Jun 18, 2026. Menus change periodically; values may vary by location. How we verify →
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Outback Center-Cut Sirloin 11 oz — common questions
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