Sizzling Low Carb Keto Reuben Casserole Recipe for Family Meals

Packed with classic deli flavors, this keto reuben casserole delivers a mouthwatering twist on the beloved sandwich without the bread.

Layers of tender corned beef merge seamlessly with tangy sauerkraut and melted Swiss cheese.

The robust ingredients create a comforting dish that satisfies low-carb cravings with every delicious bite.

Zesty Russian dressing adds a creamy punch that brings all the components together perfectly.

Each forkful captures the essence of a traditional Reuben while staying true to ketogenic eating principles.

This simple yet impressive casserole turns a restaurant favorite into an easy weeknight meal that takes minimal effort.

Dive into this protein-packed comfort food that promises to become a new dinnertime staple.

Quick Recipe Overview

Prep Time: 10 minutes

Cook Time: 35 minutes

Total Time: 45 minutes

Calories: 350 kcal

Servings: 6

Ingredients Checklist for Low Carb Keto Reuben Casserole

• Cauliflower: Provides low-carb foundation with nutty texture; choose fresh, firm heads without brown spots.
• Avocado Oil: Ensures crisp roasting and adds healthy fat; select cold-pressed for maximum nutrition.
• Salt: Enhances natural vegetable flavors; use sea salt for mineral richness.
• Black Pepper: Adds subtle warmth and depth; freshly ground offers most intense flavor.

• Corned Beef: Delivers classic deli-style protein; choose lean cuts with minimal visible fat.
• Sauerkraut: Introduces traditional tangy kick; opt for naturally fermented varieties for probiotic benefits.

• Thousand Island Dressing: Creates rich, creamy layer; select low-sugar or homemade versions for keto compatibility.
• Swiss Cheese: Provides melty, luxurious topping; seek high-quality, full-fat slices for best results.

Kitchen Gear to Make Keto Reuben Casserole

• Large bowl: Essential for tossing and mixing cauliflower with oil and seasonings.
• Baking sheet: Needed to roast cauliflower evenly with nice golden edges.
• 9×13 inch baking dish: Perfect for assembling and baking the entire casserole.
• Cutting board: Used for chopping corned beef into bite-sized pieces.
• Sharp knife: Helps chop corned beef precisely and quickly.
• Measuring spoons: Ensures accurate seasoning with salt and pepper.
• Cheese grater (optional): Can be used if you prefer to grate Swiss cheese instead of using slices.

How to Cook the Best Keto Reuben Casserole

• Oven Preparation Warm up the cooking space to create the perfect environment for your delicious meal.
• Cauliflower Magic Transform the humble vegetable into a crispy, golden base that will make taste buds dance with excitement.
• Flavor Foundation Layer the roasted cauliflower with tangy sauerkraut, creating a delightful textural playground that hints at classic deli flavors.
• Protein and Cheese Celebration Generously scatter corned beef across the surface and blanket everything with melty Swiss cheese that promises gooey goodness.
• Final Transformation Slide the casserole into the heated oven, allowing all the flavors to mingle and create a mouthwatering masterpiece that brings comfort and joy to the dinner table.

Variation Ideas for a Bold Keto Reuben Casserole

• Replace corned beef with pastrami, turkey, or roasted chicken for a personalized twist on the classic flavor profile.
• Mix in additional low-carb vegetables like sliced bell peppers or zucchini to increase nutritional value and add extra texture.
• Sprinkle red pepper flakes or add a dash of horseradish to give the casserole a zesty kick that'll wake up your taste buds.
• Experiment with different melting cheeses like provolone, aged cheddar, or a blend of cheeses to create your unique flavor combination.
• Prepare the entire casserole up to the baking stage, cover, and refrigerate for up to 24 hours, making meal prep a breeze for busy days.

Serving Keto Reuben Casserole Hot & Hearty

• Pair with Crisp Green Salad: Complement the rich, savory casserole with a light, tangy salad dressed in a zesty vinaigrette to balance the dish's heavy flavors.
• Serve with Dill Pickles: Add crunchy, briny dill pickle spears on the side to enhance the classic Reuben sandwich taste and provide a refreshing contrast.
• Create Low-Carb Bread Alternatives: Offer cloud bread, cauliflower toast, or lettuce wraps for those wanting a bread-like accompaniment without extra carbs.
• Garnish with Fresh Herbs: Sprinkle chopped fresh parsley or chives on top to add a bright, fresh element and elevate the casserole's visual appeal.

How to Store Leftover Reuben Casserole on Keto

• Refrigerate Strategically: Store leftover casserole in an airtight container for up to 3-4 days, keeping the dish's texture and flavor intact.
• Reheat with Care: Warm individual portions in the microwave for 1-2 minutes or in the oven at 350°F (175°C) until heated through, preventing soggy texture.
• Freeze for Future Meals: Wrap the casserole tightly in plastic wrap and aluminum foil, storing in the freezer for up to 2 months. Thaw overnight in the refrigerator before reheating.
• Prep Ahead Wisely: Roast cauliflower and chop ingredients in advance, allowing quick assembly when you're ready to bake the casserole.

Hearty Low Carb Keto Reuben Casserole Recipe

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• Total Time: 45 minutes
• Yield: 6 1x

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Description

Keto reuben casserole delivers classic deli sandwich flavors without carb-heavy bread. Hearty layers of corned beef, Swiss cheese, and tangy sauerkraut combine for a satisfying meal you can easily enjoy.

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Ingredients

Scale 1x2x3x

• 1 lb (450g) corned beef, chopped into bite-sized pieces
• 1 medium head cauliflower, cut into bite-sized florets
• 8 oz (225g) Swiss cheese slices
• 1 can (14 oz / 400g) sauerkraut, drained
• 1 cup (240 ml) sugar-free thousand island dressing
• 3 tbsps (45 ml) avocado oil
• ½ tsp sea salt
• ¼ tsp black pepper

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Instructions

1. Preparation: Preheat oven to 400°F (200°C), creating an ideal cooking environment for the keto reuben casserole.
2. Cauliflower Foundation: Toss cauliflower florets with avocado oil, kosher salt, and black pepper, then spread evenly on a rimmed baking sheet. Roast for 25-30 minutes until golden and tender, developing rich caramelized edges.
3. Layer Assembly: Transfer roasted cauliflower to a 9×13 inch baking dish, completely drain sauerkraut, and spread uniformly over the cauliflower base. Drizzle thousand island dressing evenly across the sauerkraut layer.
4. Protein and Cheese Topping: Distribute chopped corned beef over the dressed sauerkraut, then carefully arrange Swiss cheese slices to completely cover the casserole surface.
5. Final Baking: Return assembled casserole to the preheated oven and bake for 10-15 minutes, watching for completely melted cheese with a slightly bubbling, golden-brown finish.

Notes

• Roast Cauliflower Perfectly: Ensure each floret has space on the baking sheet to caramelize evenly, preventing steaming and achieving a golden-brown exterior with maximum flavor development.
• Drain Sauerkraut Thoroughly: Remove excess moisture completely to prevent a watery casserole and maintain the dish’s desired texture and concentrated tangy flavor profile.
• Cheese Melting Technique: Watch carefully during the final 10-15 minutes of baking to achieve the ideal golden, bubbly cheese topping without burning or overcooking.
• Low Carb Swap Success: Use fresh cauliflower as a strategic low-carb alternative to traditional rye bread, maintaining the classic Reuben flavor while reducing overall carbohydrate content.

• Prep Time: 10 minutes
• Cook Time: 35 minutes
• Category: Dinner, Lunch
• Method: Baking
• Cuisine: American

Nutrition

• Serving Size: 6
• Calories: 350
• Sugar: 2 g
• Sodium: 900 mg
• Fat: 25 g
• Saturated Fat: 10 g
• Unsaturated Fat: 15 g
• Trans Fat: 0 g
• Carbohydrates: 8 g
• Fiber: 4 g
• Protein: 24 g
• Cholesterol: 80 mg