Step 1
Stand beets upright in a saucepan. Fill saucepan with about 1-inch of water and bring to a boil. Lower heat to a simmer cover and steam beets until tender about 40 minutes.
Step 2
Carefully remove beets from saucepan peel and coarsely chop into chunks.
Step 3
Place beets in a blender and puree until smooth. Measure out 1 cup.
Step 4
Preheat oven to 350 degrees F (175 degrees C).
Step 5
Spray 1 large loaf pan with cooking spray.
Step 6
Mix whole wheat flour unbleached flour baking soda and salt together in a medium bowl.
Step 7
Stir 1 cup beet puree with 1/2 cup water together in a bowl.
Step 8
Beat sugar and margarine together in a large bowl with an electric hand mixer on low speed until blended.
Step 9
Beat eggs and beet mixture into sugar mixture until combined.
Step 9
Gradually stir flour mixture into wet ingredients mixing after each small addition until just combined.