Frosted Blueberry Pie Bars – Simmer + Sauce

Ingredients

• For the Blueberry Sauce:
• 3 tablespoons sugar
• 1 teaspoon cornstarch
• Pinch of salt
• 3/4 cup fresh blueberries
• 2 tablespoons water
• 1/2 teaspoon vanilla extract
• For the Blueberry Layer:
• 2 cups frozen blueberries
• 2 teaspoons cornstarch
• 1/4 cup sugar
• 1 teaspoon vanilla extract
• For the Bottom Layer And Crumble Topping:
• 1 1/4 cup flour
• 1/2 cup sugar
• 1/2 teaspoon baking powder
• 10 tablespoons cold unsalted butter, cubed
• 1 large egg yolk
• For the Topping:
• 1 tablespoon brown sugar, packed
• 1 tablespoon sugar
• For the Glaze:
• 1 cup powdered sugar
• 1 1/2 tablespoons milk