Blueberry Oatmeal Bars

INGREDIENTS

1 cup

old-fashioned rolled oats (gluten free if needed)

3/4

cup white whole wheat flour (or substitute all-purpose flour or, to make gluten free, 1:1 baking flour)

1/3 cup

light brown sugar

1/2 tsp

ground cinnamon

1/4 tsp

kosher salt

6 tbsp

unsalted butter, melted (or substitute melted coconut oil to make vegan/dairy free)

2 cups

fresh blueberries* (about 10 ounces)

1 tsp

cornstarch

tablespoon freshly squeezed lemon juice (from about 1/2 small lemon)

1 tbsp

granulated sugar, divided

1/2 cup

powdered sugar, sifted

1/2 tsp

pure vanilla extract

1 tbsp

milk (any kind you like)