Christina's Sliced Beets in Creamy Mustard Sauce

adapted from Greene on Greens

11/2 pounds beets, scrubbed, trimmed and peeled
3 tablespoons unsalted butter
1/4 cup finely minced shallot or red onion
1 tablespoon all-purpose flour
1/2 cup vegetable or chicken stock
1/4 cup milk
3 tablespoons prepared Dijon mustard
salt and freshly ground black pepper
chopped fresh parsley

1. Preheat the oven to 400°F.

2. Place beets in a small roasting pan with 1/2 cup water. Cover with foil and bake until beets are easily pierced with a sharp knife, 45 minutes to 1 hour depending on size. Slice the beets in half; cut each half into 1/4-inch wedges.

3. Melt the butter in a large skillet over medium-low heat. Add the shallot or red onion; cook, stirring, for 4 minutes. Add flour and stir constantly for 2 minutes. Whisk in the stock, milk, and mustard. Cook and stir the
mixture until slightly thickened.

4. Remove the skillet from heat. Season with salt and pepper to taste and garnish with parsley.

5. Rewarm beets and serve with sauce on the side.