Plum or Peach Cobbler Muffins

2 firm plums or peaches
2 cups flour
1 cup sugar
1 tablespoon baking powder
1 teaspoon salt
4 tablespoons melted butter
1/4 cup oil
3/4 cup milk
1 teaspoon vanilla extract
cinnamon, for dusting muffin tops

Heat oven to 350 degrees.
Peel and slice fruit into 6 slices each.
Sift the dry ingredients, making a well in the center.
Pour wet ingredients into the well, and blend by hand.
(Batter will be thicker than regular muffin batter.) Scoop batter into lightly greased, large 6 muffin pan.
Insert 2 plum or peach wedges into each muffin.
(They will be sticking out over the batter. This is ok) Sprinkle muffin tops with cinnamon.
Bake for 30 minutes, or until center of muffins is resistant to touch.
Cool 5 minutes in pan, then turn out on rack to cool.