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Roasted root vegetables in a glass bowl

Filed Under: Food Tagged With: recipe

Roasted Root Vegetables with Horseradish-Thyme Butter Recipe

June 30, 2023 By Lucy Mercer Leave a Comment

Root vegetables like carrots, radishes, onions, turnips and beets, show up in spring markets. They’re lovely roasted with olive oil, salt and pepper. But maybe you want something more ~ then try this recipe for a horseradish-thyme butter that adds zingy flavor to vegetables.

This recipe has been with me awhile. I discovered the foundation in The Gourmet Cookbook about 10 years ago. I was likely looking for recipes to use up the CSA haul of root vegetables. The horseradish-thyme butter transformed stodgy veg like turnips and radishes into a memorable, tasty, savory dish.

Back then, I wrote up the recipe for Food52, but never got around to putting it on my own blog. So, here it is, Roasted Spring Root Vegetables with Horseradish-Thyme Butter.

I streamlined the recipe instructions and adjusted the ingredients this go-round. Sadly, the turnips in the market were shrinkled (what my kids used to say their hands looked like after too long in the bath). No worries, I increased the overall amount of carrots, onions and radishes for a tasty take on the recipe. Give it a try when your CSA basket overflows with root vegetables.

Carrots, onions and radishes on a tray
Carrots, Vidalia onions and radishes take to roasting well, becoming sweeter and crispier. Photo by Lucy Mercer/A Cook and Her Books

Roasted Spring Root Vegetables with Horseradish Butter Recipe

Inspired by a recipe in the Gourmet Cookbook

Note: You can substitute turnips and beets for some of the vegetables.

Ingredients

Roasted spring root vegetables

3 sweet onions, like Vidalia, quartered

6 radishes, halved

6 carrots, peeled and diced 1″

3 tablespoons olive oil

Salt and pepper

Directions

Roasted spring root vegetables

Heat oven to 400 degrees Fahrenheit. Combine vegetables in a large bowl and coat with olive oil, salt and pepper. Stir with spoon or toss with hands to make sure all pieces are evenly coated.

Spread vegetables in a single layer on a foil-lined baking sheet. Place in 400-degree oven for 45 minutes, stirring occasionally. Vegetables will have caramel-brown edges when ready. Toss vegetables with Horseradish-Thyme Butter and serve.

Horseradish-thyme butter in a bowl on a plate with a sprig of thyme
Horseradish-thyme butter is delicious on vegetables. Try it on proteins like chicken and steak, too. Photo by Lucy Mercer/A Cook and Her Books

Horseradish-thyme butter

Ingredients

3 tablespoons unsalted butter, at room temperature

1 tablespoon prepared horseradish

1 tablespoon chopped fresh thyme

1/2 teaspoon salt

2 teaspoons white wine vinegar

Directions

In a small bowl, stir together softened butter, horseradish, thyme and salt. Stir in vinegar.

When vegetables are still warm from the oven, transfer to a bowl. Place softened butter over veg and stir until melted. Serve while warm. Leftovers can be stored in a sealed container in the refrigerator for a few days.

Roasted root vegetables on a sheet tray

More Recipes from A Cook and Her Books

Try my Roasted Tomato Jam with Warm Indian Spices and my homemade Seafood Chowder recipes.

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