Table of Contents
Recreate Ruth's Chris steakhouse lobster mac and cheese at home using sharp white cheddar, gruyère, parmesan, cavatappi pasta, and lobster tails cooked to exactly 135°F.
Build a roux with butter and flour, whisk in heavy cream and milk, then melt cheeses off heat to prevent stringiness and graininess.
Toss undercooked cavatappi with cheese sauce and chopped lobster, transfer to a buttered baking dish, and cover with reserved cheddar.
Bake at 400°F for 20-25 minutes until golden and bubbly, then rest 5-10 minutes to allow sauce thickening.
Refrigerate leftovers up to 3 days in an airtight container and reheat in a 300°F oven only—never freeze or microwave.
Question | Answer |
|---|---|
What three cheeses does Ruth's Chris lobster mac use? | Sharp white cheddar provides the tangy base, gruyère adds nutty creaminess, and parmesan delivers intense umami. |
Why must lobster reach exactly 135°F? | This temperature yields tender opaque meat without the rubbery texture caused by overcooking. |
Why does the recipe require grating cheese fresh? | Pre-shredded cheese contains cellulose anti-caking agents that block smooth melting and create gritty sauce. |
How long can I store leftovers safely? | Cool completely and refrigerate in an airtight container for up to three days maximum. |
Why avoid microwaving when reheating? | Microwaving makes lobster rubbery and causes the cheese sauce to separate into greasy clumps. |
Gather fresh ingredients including lobster tails and three cheeses
The Three-Cheese Blend
Ruth's Chris builds flavor through a specific trio. Sharp white cheddar creates the tangy backbone and melts smoothly. Gruyère contributes nutty, creamy depth. Parmesan adds intense umami and salt balance.
Cheese | Amount | Function |
|---|---|---|
White cheddar | 2 to 2½ cups shredded | Sharp flavor base and primary melt |
Gruyère | ½ cup shredded | Nutty depth and creamy texture |
Parmesan | ½ cup grated | Umami richness and salt balance |
Reserve ½ cup cheddar for the golden topping. Grate cheese fresh—pre-shredded contains cellulose that blocks smooth melting.
Lobster Selection
Tails provide optimal meat-to-shell ratio. Two 6-8 ounce tails yield approximately 8 ounces cooked meat. Steam for 1 minute per ounce or grill 10 minutes until internal temperature reaches 135°F. Immediately shock in ice bath to stop cooking.
Pasta and Sauce Components
Cavatappi corkscrew pasta traps sauce in its ridges and hollow center. You need ½ pound cooked to al dente.
- Butter: 2-4 tablespoons for roux
- All-purpose flour: 1-1½ tablespoons
- Heavy cream: 1 cup
- Whole milk: ½ cup
- Salt: ½-1 teaspoon
- Fresh chives: 1 teaspoon chopped
Optional: garlic powder, mustard powder, or nutmeg for subtle complexity.
Cook lobster to 135°F and pasta to al dente perfection
Lobster Preparation
Overcooking ruins texture. Cook tails to exactly 135°F internal temperature—meat turns opaque white with slight translucency at center.
Method | Time | Visual Cue |
|---|---|---|
Steam | 1 minute per ounce | Shells bright red |
Grill | ~10 minutes | Meat reaches 135°F |
Transfer immediately to ice bath. This halts cooking and prevents rubbery texture. Once cooled, remove meat from shells and chop into bite-sized pieces.
Pasta Timing
Cook ½ pound cavatappi in salted boiling water for 8-10 minutes until al dente—firm to bite with visible white core. Pasta continues softening during the 20-25 minute bake.
- Drain promptly
- Toss with olive oil to prevent sticking
- Set aside while preparing sauce
Build a roux and melt cheeses off heat for smooth sauce
Create the Roux Base
Melt 2 tablespoons butter in a small pot over medium heat until bubbly—about 2 minutes. Add 1-1½ tablespoons all-purpose flour. Cook while stirring constantly until the roux turns frothy and smells nutty. This takes 3 to 5 minutes. Undercooked roux leaves a gritty texture and raw flour taste.
Add Dairy Slowly
Slowly whisk in 1 cup heavy cream followed by ½ cup milk. Slow addition prevents lumps. Bring the mixture to a simmer over medium heat. Cook for 5 minutes until lightly thickened. The sauce should coat the back of a spoon.
Technique | Result | Common Error |
|---|---|---|
Slow whisking | Thick, creamy sauce | Dumping milk quickly creates lumps |
Proper roux cooking | Nutty, smooth base | Undercooking leaves gritty texture |
Melt Cheese Off Heat
Remove the pot from heat completely. Add 1½ cups of the cheddar cheese one handful at a time, stirring until each batch melts before adding the next. Follow with gruyère and parmesan. Adding cheese while the pot sits on the burner causes stringiness and separation.
- Remove from heat first
- Add cheese gradually
- Stir continuously until smooth
- Season with ½ teaspoon salt
Combine in baking dish and bake until golden and bubbly
Assemble the Dish
Preheat oven to 400°F (190°C). Grease a 9×13 baking dish with butter. Toss cooked cavatappi with cheese sauce until evenly coated. Transfer mixture to the dish. Sprinkle chopped lobster meat evenly over top. Cover with reserved ½ cup shredded cheddar for the golden crust.
Bake to Perfection
Parameter | Setting | Visual Cue |
|---|---|---|
Temperature | 375-400°F (190-205°C) | Even browning |
Time | 20-25 minutes | Golden brown top |
Position | Center rack | Bubbling edges |
The cheese turns deep golden with crispy edges. Sauce bubbles vigorously around the dish perimeter.
The Critical Rest
- Lobster stays tender during rest
- Sauce sets properly
- Prevents burned mouths
Garnish with chopped fresh chives. The contrast of creamy interior, succulent lobster, and crispy cheese crust defines the steakhouse experience.
Store leftovers up to three days and reheat in oven only
Storage Guidelines
Cool the dish completely before transferring to an airtight container. Refrigerate up to 3 days. Do not freeze—the dairy sauce separates irreparably and lobster texture degrades upon thawing.
- Cool completely first
- Use airtight container
- Refrigerate 3 days maximum
- Never freeze
Reheating Methods
Method | Temperature | Duration | Outcome |
|---|---|---|---|
Oven (recommended) | 300°F (150°C) | 15 minutes | Sauce reconstitutes smoothly, lobster stays tender |
Microwave | Not recommended | — | Rubbery lobster, separated grainy sauce |
Make-Ahead Strategy
Assemble the unbaked dish up to 24 hours in advance. Cover tightly with plastic wrap or foil and refrigerate. When ready to serve, bake directly from the cold state. Extend cooking time by 5-10 minutes if needed until golden and bubbling throughout.
This approach develops flavor and eliminates last-minute stress when entertaining guests.