Cheesy Cauliflower Casserole

Cheesy cauliflower casserole is perfect for low-carb and keto diets. Or just a great veggie dish. Make this today with these easy step by step photo instructions.
Prep Time10 mins
Cook Time20 mins
Total Time30 mins
Course: Main Course, Side Dish
Cuisine: American
Servings: 4
Calories: 263kcal
Author: Dan Mikesell AKA DrDan


  • 1 lb frozen cauliflower
  • 1 cup sour cream
  • 1 cup cheddar cheese
  • 3 green onions sliced thin
  • 1/2 teaspoon salt
  • 1/4 teaspoon pepper coarse ground
  • 3 slices bacon optional. Cooked and crumbled.


  • Cook the entire bag of cauliflower in the microwave. I use a covered dish with about a tablespoon of water on the "frozen vegetable" setting. Or follow instructions on package. You can use fresh cauliflower. One medium head should yield about one pound and cook in a microwave in 4-5 minutes with a bit of water.
  • Slice 3 green onions. Move cauliflower to mixing bowl and mash with potato masher. You could also use a mixer or food processor, but you are NOT trying to cream this.
  • Add cheddar cheese, sour cream, scallions, salt, and pepper. Add bacon if using.
  • Mix well and move to baking pan. May be refrigerated or cooked now.
  • Cook in preheated oven 375 convection until top is browned. About 20 minutes until nicely browned. (you may adjust the temp depending on your needs for timing or cooking with other foods)
  • Try to let set for 5 minutes before serving.


Pro Tips

  1. You may use frozen or fresh cauliflower. Cook per instructions.
  2. Make it "crack" by adding 3 slices of cooked and crumbled bacon.
  3. Reheats well in a microwave.
  4. Pan size. I usually use a 7 X 10 Corning Ware dish. An 8 X 8 would be good or anything in about that size range.
  5. Since this was originally published, many bags of frozen cauliflower have "shrunk" to 12 oz from 1 pound. The recipe will need to be decreased by 25%  if that is what you have. Cooking time will be about the same.
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Calories: 263kcal | Carbohydrates: 8g | Protein: 11g | Fat: 20g | Saturated Fat: 13g | Polyunsaturated Fat: 0.4g | Monounsaturated Fat: 3g | Cholesterol: 69mg | Sodium: 476mg | Potassium: 269mg | Fiber: 3g | Sugar: 5g | Vitamin A: 750IU | Vitamin C: 78.4mg | Calcium: 270mg | Iron: 0.9mg