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Keto Broccoli and Cauliflower Gratin

This Keto Broccoli and Cauliflower Gratin is the ultimate low-carb comfort food. With tender vegetables baked in a creamy, cheesy sauce, it’s a family-friendly dish that feels indulgent while staying perfectly keto-friendly.
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Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 6 servings
Course: Side Dish
Cuisine: American, Low-Carb
Calories: 290
Ingredients Equipment Method Notes

Ingredients
  

  • 3 cups broccoli florets fresh or lightly steamed
  • 3 cups cauliflower florets fresh or lightly steamed
  • 2 tbsp unsalted butter
  • 2 cloves garlic minced
  • 1 cup heavy cream
  • 1/2 cup cream cheese softened
  • 1 tsp Dijon mustard
  • 1/2 tsp paprika
  • 1/2 tsp black pepper
  • 1 tsp salt adjust to taste
  • 1 1/2 cups shredded cheddar cheese divided
  • 1/2 cup grated Parmesan cheese
  • fresh parsley for garnish

Equipment

  • Baking dish
  • Skillet
  • Mixing bowls
  • Whisk
  • Measuring cups and spoons

Method
 

  1. Preheat oven to 375°F (190°C). Grease a medium baking dish.
  2. Lightly steam broccoli and cauliflower for 3–4 minutes, then drain.
  3. In a skillet, melt butter and sauté garlic. Stir in cream, cream cheese, Dijon mustard, paprika, salt, and pepper until smooth.
  4. Add 1 cup cheddar and 1/4 cup Parmesan, stirring until melted.
  5. Place broccoli and cauliflower in baking dish, pour sauce over, and stir to coat.
  6. Top with remaining cheddar and Parmesan.
  7. Bake for 20–25 minutes until golden and bubbly.
  8. Cool slightly, garnish with parsley, and serve.

Notes

Assemble ahead of time and refrigerate until ready to bake. For a crispier topping, broil for 2 minutes at the end.