1. Preheat the oven to 375F. You will need a 8×8” pyrex pan.
2. If you have a double boiler, use it to melt 4 oz of unsweetened chocolate and 1/4 cup of sunflower oil. (if you don’t have a double-boiler, use another combination of pots and pans you have)
3. Combine 3 eggs and 1 3/4 cup of sugar in a large bowl and beat with the electric mixer until fluffy. Slowly beat the remaining 3/4 cup of oil, chocolate mixture, 2 cups of puréed cooked beets (about 3 med. beets), and 1 tablespoon of vanilla extract.
4. Combine in a large bowl 1 1/2 cups of all purpose flour , 1/2 cup of whole wheat flour, 2 teaspoon of baking soda and 1/4 teaspoon of salt. Gently stir the flour mix into the eggs and chocolate mix just until flour is mixed in. Pour batter into the prepared pan.
5. Bake about 45 minutes.
From “Farmer John’s Cookbook”.