Nutrition per serving may change if servings are adjusted.
Nonstick cooking spray
1⅓ cups all-purpose flour
¾ cup buckwheat flour
¼ cup sugar, or more to taste
1½ teaspoons baking powder
1 teaspoon ground cinnamon
½ teaspoon baking soda
½ teaspoon salt
2 eggs, slightly beaten
1 cup mashed, cooked butternut squash
½ cup fat-free milk
2 tablespoons cooking oil
½ teaspoon finely shredded orange peel
¼ cup orange juice
¾ cup fresh or frozen blueberries
Spray twelve 2- ½-inch muffin cups with nonstick spray or line with paper bake cups; set pan aside. Combine the all-purpose flour, buckwheat flour, sugar, baking powder, cinnamon, baking soda, and salt in a medium mixing bowl. Make a well in the center of flour mixture; set aside.
Combine the eggs, squash, milk, oil, orange peel, and orange juice in a separate mixing bowl. Add the egg mixture all at once to the flour mixture. Stir just until moistened (batter should be lumpy). Fold in blueberries.
Preheat oven to 400°F. Spoon batter into the prepared muffin cups, filling each almost full. Sprinkle with oats. Bake for 15 to 20 minutes or until the muffins are light brown. Cool in muffin cups on wire rack for 5 minutes. Remove from muffin cups; serve warm.