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 Roasted Cauliflower with Mustard Butter?

You need 8 ingredients. The key ingredients include: 1 head cauliflower, trimmed into florets, 1 lb. red potatoes, halfed and cut in thirds, 2 tbsp. olive oil, Salt and pepper, to taste, and more.

Is Roasted Cauliflower with Mustard Butter suitable as vegetarian?

Yes, Roasted Cauliflower with Mustard Butter falls under the Vegetarian category and is a great choice for this type of meal.

How do I store leftover Roasted Cauliflower with Mustard Butter?

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

Roasted Cauliflower with Mustard Butter Recipe

Name: Roasted Cauliflower with Mustard Butter
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 head cauliflower, trimmed into florets; 1 lb. red potatoes, halfed and cut in thirds; 2 tbsp. olive oil; Salt and pepper, to taste; 4 tbsp. butter, softened; 2 tbsp. whole grain mustard; 2 tsp. prepared horseradish; 1 tsp. honey

Try this homemade Roasted Cauliflower with Mustard Butter recipe the whole family will love. Made with cauliflower, red potatoes, olive oil and Salt. Ea…

This Roasted Cauliflower with Mustard Butter relies on simple, everyday ingredients such as olive oil, salt and pepper, to taste, butter, softened and whole grain mustard. It comes together quickly and makes 4 servings, at about 313 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

Servings: persons

1 head cauliflower, trimmed into florets
1 lb. red potatoes, halfed and cut in thirds
2 tbsp. olive oil
Salt and pepper, to taste
4 tbsp. butter, softened
2 tbsp. whole grain mustard
2 tsp. prepared horseradish
1 tsp. honey

Frequently Asked Questions

Quick Info

Servings
4 servings
Calories
313 kcal
Category
Vegetarian

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