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Cauliflower with Mustard-Lemon Butter

Tender roasted cauliflower slices drizzled with a rich mustard-lemon butter sauce and finished with fresh parsley. A delicious side dish that combines the nutty flavor of roasted cauliflower with bright citrus and tangy mustard.

4 servings
32 min
Published October 4, 2025

Ingredients

  • •1 head cauliflower
  • •1 teaspoon coarse kosher salt
  • •6 tablespoons butter
  • •2 tablespoons fresh lemon juice
  • •2 tablespoons whole grain Dijon mustard
  • •1½ teaspoons lemon peel
  • •1 tablespoon fresh parsley

Cooking Instructions

  1. 1.

    Preheat oven to 400°F. Butter rimmed baking sheet. Cut cauliflower in half, then cut crosswise into 1/4-inch-thick slices. Arrange slices in single layer on prepared baking sheet; sprinkle with salt. Roast until cauliflower is slightly softened, about 15 minutes.

    15 min

  2. 2.

    Meanwhile, melt butter in small saucepan over medium heat. Whisk in lemon juice, mustard, and lemon peel.

    5 min

  3. 3.

    Spoon mustard-lemon butter evenly over cauliflower and roast until crisp-tender, about 10 minutes longer. DO AHEAD Can be made 2 hours ahead. Let stand at room temperature. If desired, rewarm in 350°F oven until heated through, about 10 minutes.

    10 min

  4. 4.

    Transfer cauliflower to platter. Sprinkle with parsley and serve warm or at room temperature.

    2 min

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