Ingredients
Crumble Topping
- 1 cup All-Purpose Flour
- 3/4 cup Old Fashioned Oats
- 1/2 cup Granulated Sugar
- 1/4 cup Brown Sugar, packed
- 1/2 teaspoon Cinnamon
- 1/4 teaspoon Salt
- 1/2 cup Unsalted Butter, melted
- 1 Large Egg Yolk
- 1 tablespoon Brown Sugar, packed
Blueberry Layer
- 2 cups Blueberries, fresh
- 2 teaspoons Lemon Juice
- 1/4 cup Granulated Sugar
- 2 teaspoons Cornstarch
Directions
- Preheat oven to 350F; line an 8×8 baking pan with aluminum foil then grease with cooking spray
- In a medium bowl whisk together the flour, oatmeal, granulated sugar, 1/4 cup brown sugar, cinnamon, and salt; gently stir in the melted butter and egg yolk
- Remove 1 cup of the mixture
- Press the remaining mixture into the bottom of the prepared pan
- In a medium bowl, mix together all the ingredients for the blueberry layer; spoon over top of the base oatmeal cookie mixture in the pan
- With the reserved 1 cup of oatmeal mixture stir in the 1 additional tablespoon of brown sugar; crumble the mixture over top of the blueberry layer
- Bake for 40-45 minutes until the blueberries start to bubble and the top crumble starts to brown
- Allow to cool to room temperature before cutting into bars