Pre heat oven to 350 degrees F.

Line cookie sheets with parchment paper.

In bowl add the flour, baking soda and cinnamon, stir to mix and combine. Set aside.

In mixing bowl add the melted butter, sugars and mix well to combine.

Add egg and vanilla, mix well.

In small additions and mixer on low add the flour mixture and mix until just combine (do not over mix).

By hand fold in the oats until well combined. And then fold in the blueberries, gently to avoid a lot of breakage.

Scoop 1 1/2 Tbsp cookies onto prepared cookie sheet leaving 2 inches in between.

Bake for 10-12 minutes or until edges are golden brown and tops are light brown.

Immediately sprinkle tops with brown sugar.

Cool completely and enjoy!