Blueberry Oat Bars

Preheat oven to 350 degrees F. Line an 8x8 baking dish with parchment paper. In a bowl, melt butter. Then add the 'oat layer' ingredients and mix to combine until clumps start to form. It seems a bit dry but do not worry! Reserve at least 1/2 a cup for the top. Press the remaining mixture onto the bottom of the baking dish to create an even layer. Use your hands to warm it up/help the layer stick together better. In a medium bowl, combine sugar, lemon juice, and cornstarch. Toss blueberries. Add on top of the first oat layer. Top with the reserved oats. The blueberries will likely not be fully covered, this is okay! Bake for 30-45 minutes or until crust is golden. If topping with icing, first allow oat bars to fully cool. Then whisk together icing ingredients and drizzle across the top of the bars. Cut into 9 squares and ENJOY.