Preheat oven to 400 degrees. If beets have tops slice off the tops and wash beets thoroughly. Place on a baking sheet and bake until tender, approximately 50 minutes. Let cool.
Peel cooled beets, then chop to desired size (I used my food processor)
In a medium sized bowl combine beets, sour cream and minced onion. Stir to combine, then taste and adjust salt and pepper.
I am not a health professional and nutrition data is calculated programatically. Accuracy may vary with product selection, calculator accuracy, etc. Consult a professional for the best information.