Cheesy Keto Cauliflower Gratin (Easy One-Dish Recipe)

Cheesy Keto Cauliflower Gratin (Easy One-Dish Recipe)

A decadent, low-carb side dish that perfectly mimics the comfort of traditional potato gratin without the carbs.

KEY INFO

• Prep Time: 15 minutes
• Cook Time: 15 minutes
• Total Time: 30 minutes
• Servings: 4
• Difficulty: Easy
• Dietary: Keto, Low-carb, Gluten-free

EQUIPMENT NEEDED

• 1.5-quart baking dish
• Microwave-safe bowl
• Large mixing bowl
• Measuring cups and spoons
• Alternative: Air fryer or large skillet if no oven available

INGREDIENTS

Main Components:

• 1 pound (450g) cauliflower florets, cut into even pieces
• 1 cup (240ml) sour cream
• ½ cup (120g) grated Gruyere cheese (or mild cheddar)
• 2 tablespoons (30g) grated Parmesan cheese
• 1 tablespoon (15g) butter

Seasonings:

• 1 teaspoon Dijon mustard
• 1 tablespoon minced garlic
• 1 teaspoon kosher salt
• ½ teaspoon black pepper

Optional Toppings:

• Crispy bacon bits
• Crushed pork rinds
• Fresh thyme or parsley

METHOD

1. Preheat oven to 425°F (220°C)
2. Grease your baking dish with butter
3. Place cauliflower in a microwave-safe bowl, cover, and cook for 4-5 minutes until tender-crisp

4. In a large mixing bowl, combine:
   • Sour cream
   • Gruyere cheese
   • Dijon mustard
   • Minced garlic
   • Salt and pepper

5. Gently fold cooked cauliflower into the cream mixture
6. Transfer to the baking dish and sprinkle with Parmesan

7. Bake for 15 minutes until bubbly and golden
8. Optional: Broil for 1 minute for extra browning

CRUCIAL TIPS

• Don’t overcook the cauliflower in the microwave – it should be barely tender
• Pat cauliflower dry after microwaving to prevent a watery sauce
• Let rest 5 minutes before serving to set the sauce

Storage:

• Keeps in the fridge for up to 4 days
• Reheat covered at 50% power in the microwave

Common Mistakes:

• Overcooking cauliflower (becomes mushy)
• Not drying cauliflower properly (makes the sauce watery)
• Skipping the rest period (sauce won’t set properly)

Variations:

• Swap Gruyere for sharp cheddar
• Add crispy bacon bits
• Top with crushed pork rinds for extra crunch
• Use different herbs like rosemary or thyme