Copycat Longhorn White Cheddar Pasta Bake (High-Protein, Low-Carb)

Rich, bubbly white cheddar sauce coats tender, low-carb lupin or lentil pasta, capturing the steakhouse luxury of Longhorn’s famous side dish. Packed with savory garlic and crisp, golden-brown tops, this dish delivers decadent comfort food textures while naturally fueling your day with high protein and minimal net carbs.

Can This Recipe Support Weight Loss Goals? Yes. By pairing low-carb, fiber-rich pasta alternatives with lean dairy and high-quality proteins, this casserole drives satiety without blood sugar spikes. High-protein meals trigger fullness hormones and preserve lean muscle mass during a calorie deficit, making portion-controlled servings of this dish both satisfying and strategic for steady fat loss.

Does Longhorn Steakhouse Cheesy Pasta Fit a High Protein Lifestyle? This casserole easily anchors a high-protein lifestyle by delivering over 30 grams of protein per portion. Using high-protein, low-carb pasta noodles alongside cottage cheese-blended mornay and sharp white cheddar drives the net carbs down below 12g per serving. The combination of complete dairy casein, whey, and plant-based pasta isolates provides durable amino acid profiles suitable for athletic recovery or macro-focused diet plans.

My Personal Experience

• The cottage cheese blend eliminates graininess entirely. Blending it smooth before heating mimics a heavy roux without diluting the sharp cheese flavor or adding unnecessary empty starches.

• Low-carb pasta holds up surprisingly well to baking. Pulling the noodles two minutes before al dente prevents them from turning mushy when bubbling inside the hot casserole sauce.

• Smoked provolone adds an authentic steakhouse depth. Layering sharp white cheddar with a touch of smoked cheese replicates that signature Longhorn flavor without requiring extra sodium.

Perfect For:

• Low carb recipes and macro-friendly meal prep

• High protein dinners tailored for strength training recovery

• Keto diet plans needing a comforting holiday side dish substitute

• High protein lunch boxes that reheat cleanly without oil separation

Why You’ll Love This Recipe:

• Steakhouse flavor with zero carb guilt. It delivers the signature sharp white cheddar punch of the restaurant side while remaining strictly macro-conscious.

• Effortless weeknight prep. The creamy sauce comes together in a single blender pitcher, eliminating the need to stand over a complex roux on the stove.

• Incredible morning-after reheats. The emulsion holds firm in the fridge, meaning leftover portions stay creamy without splitting into an oily mess.

Common Mistakes to Avoid:

• Overcooking the alternative pasta: Low-carb noodles break down faster than semolina; boil them strictly to a firm al dente before baking.

• Using pre-shredded bag cheese: Packaged shreds contain anti-caking starches that cause sauce graininess and add unwanted carbohydrates.

• Baking uncovered the entire time: Leaving the casserole exposed for all 25 minutes dries out the cheese sauce before the center gets piping hot.

Required Equipment:

• High-speed blender: Purees cottage cheese completely smooth to build a velvety, lump-free sauce base.

• Large pot: Provides ample boiling space so high-protein pasta cooks evenly without clumping.

• 9×13-inch ceramic baking dish: Distributes oven heat steadily to ensure a creamy center and evenly browned edges.

• Box grater: Shreds fresh blocks of white cheddar quickly for clean melting and zero added starches.

Storage Instructions: Cool leftovers completely before transferring them to airtight glass meal prep containers. Store in the refrigerator for up to 4 days, or freeze portioned slices wrapped in parchment and foil inside a freezer-safe container for up to 2 months. Thaw overnight in the fridge before gently reheating to maintain the high-protein sauce emulsion.

Recipe Details

• Preparation Time: 15 minutes

• Cooking Time: 25 minutes

• Total Time: 40 minutes

• Servings: 6

• Best Season for This Recipe: All-season comfort food (exceptional in Fall/Winter)

• Total Calories (Per Serving): 365 kcal (approximate estimate)

Tender low-carb pasta folded into a velvety, high-protein white cheddar mornay sauce and baked until bubbling. Golden panko-style pork rind crumbs crown the top for authentic steakhouse texture. A guilt-free side dish or light main built for clean nutrition goals.

📝 Ingredients:

• 8 oz high-protein low-carb penne or rotini (e.g., Kaizen, Carbe Diem, or lupin flour pasta)

• 1.5 cups low-fat 2% cottage cheese (blended until silky smooth)

• 1/2 cup unsweetened almond milk or skim milk

• 1.5 cups sharp white cheddar cheese, freshly shredded (reserve 1/2 cup for topping)

• 1/2 cup grated Parmesan cheese

• 1 tsp garlic powder

• 1/2 tsp onion powder

• 1/2 tsp smoked paprika

• 1/2 tsp salt (adjust to taste)

• 1/4 tsp freshly cracked black pepper

• 1/4 cup crushed plain pork rind crumbs (for a keto-friendly golden crumb top)

• 1 tbsp fresh parsley, finely minced (for garnish)

Directions:

1. Preheat and Prepare: Preheat your oven to 375°F (190°C). Lightly coat a 9×13-inch ceramic baking dish with olive oil or avocado oil spray.

2. Boil the Pasta: Bring a large pot of salted water to a rolling boil over high heat. Cook the low-carb pasta for 5–6 minutes (2 minutes shy of package al dente instructions). Drain and rinse with cool water to halt cooking; set aside.

3. Blend the Sauce Base: In a high-speed blender, process the cottage cheese, almond milk, garlic powder, onion powder, salt, and black pepper on high for 60 seconds until completely uniform with no visible curds.

4. Melt the Cheeses: Pour the blended mixture into a saucepan over medium-low heat. Stir continuously for 2–3 minutes until warm, then remove from heat and fold in 1 cup of shredded white cheddar and all the Parmesan until fully melted and glossy.

5. Combine: Add the par-cooked pasta directly into the cheese sauce. Fold gently with a spatula until every noodle is generously coated.

6. Assemble and Top: Transfer the mixture into the prepared baking dish. Spread evenly, then top with the remaining 1/2 cup of white cheddar and the crushed pork rind crumbs.

7. Bake to Golden Perfection: Bake uncovered at 375°F (190°C) for 18–20 minutes until the edges are vigorously bubbling. Switch oven to broil on high for 2 minutes to achieve a crisp, deep golden-brown crust.

8. Rest and Garnish: Let the casserole stand on the counter for 5 minutes to allow the sauce to set. Garnish with minced fresh parsley and serve warm.

Nutrition Facts (Per Serving – Approximate):

• Calories: 365 kcal

• Fats: 17 g

• Cholesterol: 52 mg

• Sodium: 620 mg

• Potassium: 280 mg

• Total Carbohydrates: 18 g

• Fiber: 9 g

• Net Carbs: 9 g

• Sugars: 2 g

• Protein: 32 g

• Calcium: 380 mg

Notes:

• Storage & Reheating: Warm individual portions in an oven or air fryer at 325°F (160°C) for 8 minutes to keep the topping crisp; if using a microwave, add a splash of milk and heat at 50% power to prevent cheese separation.

• Allergy Swaps: Use dairy-free cheddar and unsweetened plain cashew milk for lactose sensitivities; swap pork rind crumbs for almond flour or gluten-free panko breadcrumbs.

• Flavor Boosts: Stir in 1/4 teaspoon ground mustard into the warm cheese sauce or fold in diced roasted poblanos or grilled steak strips for extra substance.

Frequently Asked Questions:

• Can I use regular pasta instead of low-carb pasta? Yes, regular semolina pasta works using identical cooking times, though it will significantly increase total carbohydrates.

• Why did my cheese sauce separate? The sauce separated because the heat was too high when adding cheese; always melt shredded cheese off direct flame.

• Can I assemble this casserole a day in advance? Yes, assemble the dish completely, cover it tightly, refrigerate for up to 24 hours, and add 5 minutes to the final bake time.

• What can I substitute for the pork rind topping? Crushed almond flour crackers, grated parmesan, or gluten-free panko breadcrumbs make excellent alternatives.