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A close-up serving of rich Keto Broccoli Au Gratin with a golden, bubbly cheese crust.

Creamy Keto Broccoli Au Gratin Casserole


  • Author: Ahazzam
  • Total Time: 40 min
  • Yield: 6 servings
  • Diet: Low Fat

Description

Make a rich, cheesy, and low-carb version of broccoli au gratin using heavy cream and sharp cheeses. This recipe avoids flour for a true ketogenic side dish.


Ingredients

Scale
  • 2 lbs fresh or frozen broccoli florets
  • 4 tablespoons unsalted butter
  • 4 ounces cream cheese, cubed
  • 1 cup heavy whipping cream
  • 1/2 cup chicken broth (low sodium)
  • 1/2 teaspoon garlic powder
  • 1/4 teaspoon onion powder
  • 1/4 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1/4 teaspoon xanthan gum (optional, for extra thickness)
  • 1 cup shredded sharp cheddar cheese
  • 1 cup shredded Gruyère cheese


Instructions

  1. Preheat your oven to 375°F (190°C). Lightly grease an 8×8 inch baking dish.
  2. If using fresh broccoli, blanch the florets in boiling water for 2 minutes, then immediately transfer them to an ice bath to stop cooking. Drain well. If using frozen, thaw and drain thoroughly.
  3. In a medium saucepan over medium heat, melt the butter. Add the cream cheese cubes and stir until mostly melted.
  4. Pour in the heavy whipping cream and chicken broth. Whisk until smooth.
  5. Stir in the garlic powder, onion powder, salt, and pepper. If you desire a thicker sauce, whisk in the xanthan gum until no lumps remain. Cook for 1 minute until the sauce thickens slightly.
  6. Remove the sauce from the heat. Stir in 1/2 cup of the cheddar cheese and all of the Gruyère cheese until melted and combined.
  7. Place the drained broccoli florets into the prepared baking dish. Pour the cheese sauce evenly over the broccoli.
  8. Sprinkle the remaining 1/2 cup of cheddar cheese over the top.
  9. Bake for 20 to 25 minutes, or until the sauce is bubbly and the top is golden brown.
  10. Let the casserole rest for 5 minutes before serving.

Notes

  • For a richer flavor, substitute half the cheddar cheese with Monterey Jack.
  • If you skip the xanthan gum, the sauce will be thinner but still delicious.
  • To keep carbs low, check that your chicken broth has no added sugar.
  • Prep Time: 15 min
  • Cook Time: 25 min
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 serving
  • Calories: 420
  • Sugar: 3
  • Sodium: 350
  • Fat: 38
  • Saturated Fat: 23
  • Unsaturated Fat: 15
  • Trans Fat: 1
  • Carbohydrates: 7
  • Fiber: 3
  • Protein: 18
  • Cholesterol: 110
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