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Ruth's Chris Steak House · Side

Lobster Mac & Cheese

The Lobster Mac & Cheese sits on the middle of the menu of Ruth's Chris Steak House's Side section at 680 calories per serving. It pairs 32g of protein with 42g of carbohydrates and 42g of total fat, and contributes 1310mg of sodium toward the FDA's 2,300mg daily reference value.

Moderate · 680 cal 32g protein 42g carbs 42g fat High sodium · 57% DV

What's in the Lobster Mac & Cheese?

At 680 calories per serving, the Lobster Mac & Cheese represents about 34% of a 2,000-calorie daily intake. On the macronutrient side, roughly 19% of those calories come from protein, 56% from fat, and 25% from carbohydrates — a profile typical of Ruth's Chris Steak House's Side section. Sodium is often the line to watch with sit-down chain entrees, and this dish delivers 1310mg, or about 57% of the FDA's daily reference value. If you're watching salt, pairing the Lobster Mac & Cheese with a side salad (dressing on the side) and water rather than a sweetened beverage is the standard mitigation. Like most items at Ruth's Chris Steak House, the dish is built for shareable portions and is plated at restaurant scale rather than a strict single serving. Boxing half of it before you start is one of the simplest ways to bring the per-meal calorie load down meaningfully without giving up the experience.

How this fits a 2,000-calorie day

One serving of the Lobster Mac & Cheese supplies 680 calories, which represents roughly 34% of a 2,000-calorie reference day. That is a moderate restaurant-portion meal — generous compared to a home-cooked plate but not at the upper end of the chain's menu. A side salad or a smaller appetizer can round it out without pushing the day over budget.

The macronutrient split lands at roughly 19% protein, 25% carbohydrate and 56% fat by calorie share — a useful frame because raw gram counts often understate how much of a dish's energy actually comes from fat. Protein delivery at 32g is in the ordinary mid-range for the category — enough to anchor a meal, not high enough to be the dish's selling point.

Sodium clocks in at 1310mg, or about 57% of the FDA's 2,300mg daily reference value. That is on the higher end for a single restaurant serving. It still fits a normal day if other meals are light, but two restaurant meals in a row at this sodium level will add up quickly. Saturated fat is the other line worth watching at 21g — about 105% of the daily reference value — primarily a long-term cardiovascular consideration rather than a single-meal one.

Protein
32g
64% of daily reference
Carbs
42g
15% of daily reference
Fat
42g
54% of daily reference
Sodium
1,310mg
57% of daily reference

Allergen profile

Milk Wheat Shellfish

The Lobster Mac & Cheese is flagged for Milk, Wheat and Shellfish in the chain's posted allergen panel. The dairy component is most often in the sauce, the cheese topping or the butter used to finish the plate; an unsauced or sauce-on-the-side preparation can sometimes reduce — but rarely eliminate — the exposure. Wheat exposure typically comes from breading, pasta, the bun or batter; chains that publish gluten-friendly menus list specific substitution paths. Shellfish presence means shared fryers and shared prep surfaces are likely; a shellfish-allergic guest should ask for confirmation that the protein is cooked on a dedicated surface. Cross-contact in a shared kitchen is always possible, so when in doubt, ask the floor manager.

How it stacks up against the casual-dining category

Across the 35 Side entries we track in this category — averaging 375 calories and 688mg sodium per serving — the Lobster Mac & Cheese at Ruth's Chris Steak House sits roughly 81% heavier than the category average. It also delivers 622mg more sodium than the typical Side item we list, which is the more useful number if you're cross-shopping menus on the way to a reservation.

For direct cross-shopping, here are the closest Side matches we track at competing chains:

Ordering strategy

If the Lobster Mac & Cheese is the entrée you want, the highest-leverage adjustments are usually the ones that change the surrounding meal rather than the dish itself. Because the entrée itself is moderate, you have headroom for an appetizer or a starter side without dropping into restrictive territory — useful for a longer dinner where the goal is to stretch the meal rather than minimize it. Sauces, dressings and finishing oils are routinely the largest hidden source of calories on a casual-dining plate; getting them on the side gives you direct portion control without changing the dish you actually want to eat.

Ingredients summary

Lobster, cavatappi, three-cheese

Lighter alternatives at Ruth's Chris Steak House3 Side options under 680 cal
See full Side section →

The bottom line

The Lobster Mac & Cheese from Ruth's Chris Steak House is a moderate entry on the chain's menu at 680 calories and 1,310mg of sodium per serving. Protein delivery is in the typical mid-range for the category. Anyone tracking sodium specifically — including most people on blood-pressure medication — should weigh this dish against the chain's lower-sodium options on the same menu before committing.