Cheesy Cauliflower Casserole--a low carb twist on the classic mac n cheese

Cheesy Cauliflower Casserole | Low-Carb, Keto

Loaded to the brim with gooey, cheesy goodness, this cheesy cauliflower casserole is the perfect low-carb and keto friendly macaroni and cheese substitute.
4.3 from 10 votes
Print Pin
Course: casserole
Cuisine: vegetable side dish
Keyword: keto, ketogenic, low carb
Prep Time: 10 minutes
Cook Time: 15 minutes
Total Time: 25 minutes
Servings: 6 servings
Calories: 346kcal


  • 1 whole head of cauliflower , cut into florets
  • 1/2 tsp salt
  • 1 cup heavy cream
  • 2 oz cream cheese
  • 2 tsp dijon mustard
  • 2 cups shredded cheddar cheese , divided
  • salt and pepper to taste
  • 1 tsp garlic powder


  • Preheat oven to 375 and grease a 9x9 glass baking dish
  • Bring large pot of water to a boil. Add cauliflower and 1/2 tsp salt and cook until cauliflower is just fork tender. Do not over cook.
  • Drain cauliflower well and place back in pot. Set aside.
  • In a small sauce pan, bring cream to a simmer, stirring well to avoid scorching.
  • Whisk in cream cheese and mustard and stir until mixture thickens.
  • Remove from heat and whisk in 1 cup shredded cheese and seasonings.
  • Pour over cauliflower and gently mix to combine.
  • Place cauliflower in prepared dish. Sprinkle with remaining cheese and bake until cheese is bubbly and slightly browned, or about 15 minutes.
  • For an extra bubbly topping, broil on high for 2-3 minutes but be sure to watch carefully


Calories: 346kcal | Carbohydrates: 6g | Protein: 12g | Fat: 30g | Saturated Fat: 18g | Cholesterol: 104mg | Sodium: 520mg | Potassium: 366mg | Fiber: 1g | Sugar: 2g | Vitamin A: 21.7% | Vitamin C: 56.3% | Calcium: 32.8% | Iron: 3.9%