A delicious muffin made with blackberries.
In a large bowl, combine flour, sugar, baking powder, cinnamon and salt.
In a different bowl, combine egg, sour cream, oil, milk and vanilla.
Add egg mixture to flour mixture. Stir just until combined.
Gently fold in blackberries.
Place mixture into muffin tins lined with paper or sprayed lightly with a nonstick spray.
Bake in a preheated 400 degree oven for 18-20 minutes.
Let cool slightly on a baking rack. Remove from muffin tin and continue cooling.