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Cauliflower Gratin

An impressive and easy cauliflower gratin that is high in protein, gluten-free, and clean.
Categories Clean, gluten free, Healthy
Difficulty Easy
Keyword cauliflower au gratin, cauliflower au gratin healthy, cauliflower gratin
Prep Time 10 minutes
Cook Time 45 minutes
Total Time 55 minutes
Servings 4
Calories 378 kcal
Author Lacey Baier of A Sweet Pea Chef


  • 1 large head of cauliflower, broken into florets
  • 10 cremini mushrooms, diced
  • 1/2 large yellow onion, diced
  • 4 strips thick nitrate-free bacon, chopped
  • 3 cloves garlic, minced
  • 1 tsp sea salt
  • 1/2 tsp ground black pepper, divided
  • 1/2 tsp thyme
  • 1/2 tsp oregano
  • 1/2 cup parmesan cheese divided
  • 2 cups plain greek yogurt
  • 1 tbsp chickpea flour
  • optional garnish: sliced green onions


  1. Preheat your oven to 400 degrees F.
  2. Place the cauliflower florets in an oven-safe skillet and toss with olive oil, sea salt, and 1/4 tsp. ground black pepper.

  3. Roast in the oven for 30 minutes, until the cauliflower is tender and golden.
  4. While the cauliflower is roasting, add chopped bacon to a large skillet over medium-high heat and cook the bacon for 4-5 minutes.
  5. Remove the cooked bacon from the pan and set aside, reserving 1 tbsp. of the rendered bacon fat.
  6. Add in half a diced yellow onion and 8-10 diced cremini mushrooms and cook until the onion is tender.
  7. Next, add 3 cloves minced garlic and cook for one additional minute.
  8. In a small mixing bowl, whisk together 2 cups greek yogurt and 1 tbsp. chickpea flour.

  9. Turn off the heat and stir in remaining 1/4 tsp. ground black pepper, dried oregano, dried thyme, 1/4 cup grated parmesan, and the greek yogurt mixture.
  10. Once the cauliflower is ready, remove from the oven and gently fold in the onion, bacon, and greek yogurt mixture until the cauliflower is coated.
  11. Return to the oven and cook for 10 minutes to heat the mixture through.
  12. Then, sprinkle the remaining 1/4 cup of the parmesan cheese evenly over the top and return the oven for 5 more minutes, until the parmesan is melted and the gratin is golden and bubbly.

Recipe Video

Nutrition Facts
Cauliflower Gratin
Amount Per Serving (1.5 cups)
Calories 378 Calories from Fat 212
% Daily Value*
Fat 23.6g36%
Saturated Fat 6.5g33%
Cholesterol 47.9mg16%
Sodium 719mg30%
Carbohydrates 20.9g7%
Fiber 5g20%
Sugar 10.7g12%
Protein 24.7g49%
* Percent Daily Values are based on a 2000 calorie diet.