My kids like these. It's basically the
Joy of Cooking Recipe, but I use either whole wheat pastry flour or half and half whole wheat and unbleached. Really, I have made dozens of a regular muffin or quick bread recipe substituting the same amount of whole wheat pastry flour for unbleached and it's always worked fine.

The same cannot be said of substituting whole wheat pastry flour straight across for cookies.
It says milk or cream and gives two measurements for oil -- if you're going to eat them right away, go ahead and use skim milk and the smaller measurement for oil. If they're for later, and especially if you're going to freeze some, kick up the fats and they'll taste better once they're thoroughly cooled.
I used to make four or five dozen of these every week, and they were always gone by noon the next day. My kids like the poppy seed ones the best, hubby likes blueberry, I like the peach for a change.
Basic Muffins with Milk or Cream
Preheat oven to 400 degrees F. Grease a 12-cup muffin tin or line with paper cups.
Whisk together thoroughly in large bowl:
2 cups whole wheat pastry flour
or 1 cup unbleached and 1 cup whole wheat
1 Tbs baking powder
1/2 tsp salt
1/4 tsp ground nutmeg (optional, I use for blueberry or peach)
2/3 cup sugar
Whisk together in another bowl:
2 large eggs
1 cup milk or cream
4 to 8 Tbs (1/4 to 1/2 cup) melted butter or veggie oil (I use canola)
1 tsp vanilla
Add to flour mixture and mix together with a few light strokes just until the dry ingredients are moistened. Do not overmix; the batter should not be smooth. Divide the batter among the muffin cups. Bake until a toothpick inserted in 1 or 2 of the muffins comes out clean, 12 to 15 minutes (or longer for variations with fruit). Let cool for 2 to 3 minutes before removing from the pan.
Blueberry Muffins
Add 1 1/2 cups blueberries (frozen fine) to basic muffins
Peach Muffins
Add 1 1/2 cups chopped peaches to basic muffins
Poppy Seed Muffins
Add 1 1/2 Tbs poppy seeds and lemon flavoring (you can skip the vanilla flavoring or leave it in)
Or
Add 1 1/2 Tbs poppy seeds and almond flavoring
Sprinkle with sliced almonds if you want to be able to tell them from the lemon ones by sight!
Surprise muffins
Partially fill the muffin tins, add a teaspoon of jam, cover it carefully with the rest of the batter.