How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Festive Cauliflower Casserole?

You need 11 ingredients. The key ingredients include: 1 large head cauliflower, 1 c. sliced fresh mushrooms, 1/4 c. diced green pepper, 1/4 c. diced sweet red pepper, and more.

Is Festive Cauliflower Casserole suitable as vegetarian?

Yes, Festive Cauliflower Casserole falls under the Vegetarian category and is a great choice for this type of meal.

How do I store leftover Festive Cauliflower Casserole?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Festive Cauliflower Casserole Recipe

Name: Festive Cauliflower Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 large head cauliflower; 1 c. sliced fresh mushrooms; 1/4 c. diced green pepper; 1/4 c. diced sweet red pepper; 1/4 c. butter or margarine, melted; 1/3 c. all-purpose flour; 2 c. milk; 1 tsp. salt; 1 c. (4 oz.) shredded Swiss cheese; fresh parsley sprigs; sweet red pepper strips

Try this homemade Festive Cauliflower Casserole recipe the whole family will love. Made with head cauliflower, mushrooms, green pepper and sweet red pep…

This Festive Cauliflower Casserole relies on simple, everyday ingredients such as large head cauliflower, sliced fresh mushrooms, diced green pepper and diced sweet red pepper. It comes together quickly and makes 4 servings, at about 524 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 Vegetarian

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
A good 1:1 gluten-free flour blend works well if you need a gluten-free version.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

Saved locally in your browser — visible only to you.

Festive Cauliflower Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions