Brown Sugar Blueberry Muffins

Directions

1. Preheat oven to 350 degrees F.
2. In a large bowl, whisk oil, sugar, egg, milk and sour cream until smooth.
3. In a separate, sift together flour, baking powder and salt. Add alternatively to the wet ingredients with the milk. Beginning and ending with the flour mixture.
4. In small bowl, combine all ingredients for crumble. Mix until a crumbly mixture forms.
5. Divide blueberry batter evenly between a greased muffin pan. Top each muffin with brown sugar crumble.
6. Bake for 20 - 25 minutes or until cake tester come clean. Leave the muffins to cool completely in the pan.
7. For the icing, whisk above ingredients and drizzle each muffin generously. Allow a few minutes for icing to set before serving.