Preheating ovenPreheat your oven to 375˚F or 180˚C for 15 minutes. It is essential to preheat your oven to cook everything perfectly and evenly.
PreparationTake a mixing bowl, and coat 1 cup Frozen blueberries with 1 teaspoon sugar and 1 teaspoon all purpose flour. Transfer to a baking pan.
Mix ¼ cup salted butter, 1 tablespoon all purpose flour, 1 tablespoon granulated sugar, and ¾ cup rolled oats. Layer this mixture on top of the blueberries.
BakingBake this for about 15 minutes in a preheated oven or until the oats are golden brown and crisp.
Have it straight and serve it with vanilla ice cream.