How To Roast Beets In Foil. A digital probe thermometer is extremely helpful here. Cover with aluminum foil, tightly wrap and cook for one hour at 400 °f (204 °c).

Immediately immerse beets in an ice bath for easy skin removal. Because the beets are peeled, the red beets will lose some of its juice as it cooks; Add oil, remaining 1/2 teaspoon salt and remaining 1/2 teaspoon pepper;