Blueberry Streusel Muffins

Love the streusel crumble on the top of these.  A nice breakfast or snack.

TOPPING
1/3 cup whole wheat flour
1/4 cup Oats
1/4 cup packed brown sugar
1/4 tsp cinnamon
2 tbsp butter, melted

MUFFIN
2 1/2 cups flour
1 tsp baking powder
1 tsp baking soda
1/4 tsp salt
1 cup buttermilk (I just add about 2 tbsp white vinegar to 1 cup milk)
1 cup packed brown sugar
1/3 cup canola oil
1 egg
1 cup blueberries, fresh or frozen

1. Preheat oven to 375F.   Grease a 12 cup muffin pan or line with paper liners.
2. TOPPING:  Mix topping ingredients in a small bowl.  Reserve
3. MUFFIN:  Combine flour, baking powder, baking soda and salt in a large bowl.  In a separate large bowl, whisk buttermilk, brown sugar, oil and egg.  Stir into dry ingredients.  Stir in blueberries.
4. Spoon batter into prepared muffin pan.  Sprinkle with reserved topping.
5. Bakin in preheated oven, 22-25 minutes or until a toothpick inserted in centre of muffin comes out clean.  Cool on wire cooling rack.