– How to Cook Beets – Oven-Roasted Beets: pre-heat oven to 400F and line a baking sheet with foil. Tightly wrap each beet in foil and arrange on baking sheet. Roast for 1 hour, until the largest beet is easily pierced. Unwrap beets and cool slightly. Once cool enough to handle, use a paper towel to peel away beet skin. – Instant Pot Method: Place a rack at the bottom of Instant Pot, and add 1 cup of water. Place beets on rack in a single layer and pressure cook according to the following time chart:Small beets (2” diameter) -20 minutesMedium beets (2 1/2” diameter) – 30 minutesLarge beets (3” diameter) – 40 minutes