1 (18 oz) box white cake mix, such as Betty Crocker .
1/2 c flour .
1 1/2 c fresh blueberries .
1/3 c oil .
3 large eggs .
1/4 c packed brown sugar
Directions
Step #1 Preheat oven to 375 degrees.
Step #2 Line muffins tins with paper liners & spray with cooking spray.
Step #3 To make the topping, mix flour, brown sugar & butter together in a bowl & using a pastry cutter or 2 knives, cut butter into flour & sugar until a course meal texture.
Step #4 Add nuts & set aside.
Step #5 For the batter, mix dry cake mix, flour & baking powder in large bowl.
Step #6 Mix milk, eggs & oil together; add to dry mixture & stir until dry ingredients are moistened.
Step #7 There will be lumps.
Step #8 Separate 1/2 c of blueberries & set aside.
Step #9 Fold remaining blueberries into batter carefully.