Preheat oven to 350 degrees F

Mix together dry ingredients (flour, baking powder, salt, oatmeal) in a medium bowl.

In mixer beat together the butter and brown sugar until creamy. Slowly add one egg at a time. Stirring well after each addition. Mix in vanilla.

Reduce mixer speed to low and begin to mix in the flour mix. Just stirring until combined.

Stir in the blueberries and white chocolate.

Drop dough by rounded tablespoonfuls onto parchment lined baking sheets and bake at 350 for 15 minutes or until edges are brown and centers are set.

Cool on pans for a couple minutes and then transfer to wire racks to cool completely.