Step 1

Preheat oven to 350°F degrees.

Step 2

Line an 8" x 8" baking dish with parchment paper leaving an overhang on all sides for easy removal.

Step 3

Place oat flour, rolled oats, baking powder, coconut sugar, ground cinnamon, and salt in a medium-sized bowl. Mix to combine.

Step 4

Pour melted coconut oil into mixture and mix until combined.

Step 5

Scoop out 1/2 cup of the mixture and set aside.

Step 6

Pour the rest of the mixture into the parchment-lined baking dish and spread evenly. Press the mixture down firmly using a piece of parchment paper or the bottom of a measuring cup.

Step 7

Add blueberries to a small bowl, then add sugar, arrowroot starch, lemon zest, and lemon juice.

Step 8

Mix gently to combine all ingredients and to coat blueberries.

Step 9

Pour blueberry mixture over crust and spread evenly (see image above).

Step 10

Sprinkle the reserved oat mixture over the top of the blueberries.

Step 11

Bake for 40 minutes. Remove baking dish from oven and place on a wire rack to cool. Allow bars to fully cool (at least 2 hours) before removing from dish and slicing.