1/2 c  Unsalted butter, room temp
1/2 c  Granulated sugar
1/2 c  Powdered sugar
1 1/2 tb Vanilla
2    Eggs
1 c  Buttermilk or plain yogurt
1 ts Freshly grated nutmeg
1 1/2 ts Baking powder
1/2 ts Baking soda
1/2 ts Salt
1 1/3 c  Cake flour
2 tb Whole-wheat flour
1 c  All-purpose flour
2 c  Fresh or frozen blueberries
1/2 ts Freshly grated nutmeg
-stirred into
1/4 c  Granulated sugar

In large mixing bowl cream butter with both sugars until very light in
color. Scrape sides of bowl with rubber spatula. Add vanilla, eggs and
buttermilk, beating constantly.

In another bowl stir together nutmeg, baking powder, baking soda, salt and
flours. Add to butter mixture. Gently mix just until combined. Gently fold
in blueberries. Fill paper-lined muffin cups to top with batter. Sprinkle
each muffin with about 2 teaspoons nutmeg sugar.

Bake on rack in upper 1/3 of 400-degree oven until muffins are lightly
browned, about 20 to 25 minutes. Remove muffins from pan to cooling rack.
Serve warm or at room temperature. Makes 16 muffins or 6 jumbo muffins.