From the Oven - Cinnamon Sugar Donut Muffins

About a month ago I made mini cinnamon sugar coffee cakes that were tasty but were dry.  I wasn't sure if it was the recipe or the super powerful motor of my Ninja food processor that made them that way, so I found this similar recipe on Baked Perfection to could see if the results would be any different.  Another way I could have done this was use the same recipe but make it without using the Ninja...but where is the fun in that?

Pretty similar ingredients with a few extra things...
     2 cups all-purpose flour (you can substitute with 1 cup of whole wheat flour)
     1 tablespoon baking powder
     0.5 tablespoon baking soda
     2 eggs
     1 teaspoon ground cinnamon
     1 cup low-fat vanilla yogurt
     0.67 cup brown sugar
     4 tablespoons oil (I used grape seed oil)
     1 teaspoon vanilla extract
   For the topping:
     4 tablespoons butter
     0.25 cup granulated sugar
     1 teaspoon ground cinnamon

And let the experiment begin...
     In a large bowl, mix together the flour, baking powder, baking soda, salt, & cinnamon
     In another large bowl, mix together the eggs, yogurt, sugar, oil, & vanilla
     Add the dry ingredients to the wet ingredients; mix just until everything is moistened
     Divide the batter into a greased muffin pan & bake @ 400F for 12-15 minutes
     Melt the butter over low heat & mix the sugar & cinnamon in a small bowl
     When the muffins are still hot, dip them into the melted butter & then into the cinnamon sugar

Makes 12 muffins

I ended up messing up the experiment because I didn't use the Ninja for the entire process; I only used it to mix together the wet ingredients.  Anyhow, these muffins were much fluffier than the other recipe & they were very buttery.  I am going to stick with this recipe & repeat this experiment again; this time really using the Ninja all the way through.  Stay tuned.