Keto~ Cauliflower Au Gratin


  • 1 large head of cauliflower (6 to 7 inches in diameter), trimmed and cut into florets
  • 2 small red onions, thinly sliced
  • 2 tablespoons olive oil
  • 2 tablespoons balsamic vinegar
  • 1 tablespoon granular erythritol, optional
  • ¾ cup heavy cream
  • ½ cup finely grated parmesan
  • 1/2 teaspoon sea salt, more to taste
  • 1/4 teaspoon black pepper, more to taste
  • 1 cup shredded gruyere or gouda cheese
Keto Cauliflower Au Gratin | Peace Love and Low Carb


  1. Preheat the oven to 350°F.
  2. Heat the olive oil in a large skillet over medium heat. Once the pan is hot, add the onions to the pan and cook until soft and tender, about 15 minutes.
  3. Add the balsamic vinegar and erythritol, if using, to the pan with the onions, and stir to combine. Cook for an additional 5 minutes.
  4. Add the cauliflower florets to the skillet and toss to combine with the onions.
  5. In a small bowl, combine the heavy cream, parmesan cheese, salt and pepper. Pour the mixture over top of the cauliflower.
  6. Sprinkle the gruyere over top and bake for 40 minutes or until the cauliflower is tender and the top is golden brown and bubbly.




  • Calories: 324
  • Fat: 26.5g
  • Carbohydrates: 10g
  • Fiber: 2.8g
  • Protein: 12.5g

Keywords: low carb side dishes, keto side dishes, keto cauliflower recipes, keto au gratin, keto skillet meals

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