The raspberries and black cherry juice make these muffins so flavorful that you don't need any other sweetener, but you can add a tablespoon or two of sweetener if desired. My kids prefer them with 2 tablespoons to 1/4 cup of honey added.
I made both whole wheat and gluten-free versions tonight. The gluten-free ones would work best in a mini-muffin tin, but either kind works with no modifications to the recipe other than adjustments to the cooking time.
Mix together and set aside, stirring occasionally:
3 Tbsp. flaxseed meal
1/2 cup very hot water
Preheat oven to 375 degrees Fahrenheit. Oil the cups of a muffin tin.
In a large bowl, mix together:
1 and 1/2 cups whole grain flour (I used King Arthur's White Whole Wheat Flour for one batch, and 1/2 cup each brown rice, amaranth and buckwheat for the other)
1/2 cup tapioca flour
1/4 teaspoon salt
2 teaspoons baking powder (I used Hain Featherweight, or see baking powder substitutes here)
1/2 teaspoon baking soda
Combine in blender:
3/4 cup black cherry juice (Knudsen's Just Juice)
2 Tablespoons oil (I used rice bran oil)
1 cup fresh or frozen raspberries
Blend berry mixture until smooth.
Add berry mixture to dry ingredients and mix just until moistened. You should have just enough liquid to moisten all of the flour mixture. Add a tablespoon or two more juice if you are still seeing dry flour after it all seems to be mixed up.
Divide batter evenly between the cups of the muffin pan.
Bake until a toothpick comes out almost clean (gluten-free batters will be more gooey in the middle, so if the muffin seems solid and has a nice firm crust it is probably done).
I baked the whole wheat mini-muffins for 18-25 minutes and the gluten-free regular-sized muffins for 30-35 minutes. I think the gluten-free muffins might cook slightly more evenly in the mini tin.
My mini-muffin tin has 24 cups and takes the same amount of batter as a regular-sized 12-cup pan.