During the summer, when blueberries are at their peak, we love the idea of showcasing their sweetness in a pie. But who wants to spend the time rolling out pie dough when you can be at the beach or in the pool? Not us! That's why we love these mini blueberry pies. Not only are they super delicious, but they come together so easily because there is no need to roll out the dough. Just divide it into the cups of the mini-muffin pan and pinch it into place with your fingers. Mix together the filling ingredients, fill the crusts, throw the pan in the oven, and within 30 minutes, you'll have perfect, scrumptious mini blueberry pies. Feel free to substitute other berries in here as you wish - any berry will do!