Preheat oven to 425°
Prepare pie crust (print recipe separately or use purchased pie crust)
Mix the sugar. cornstarch cinnamon, and nutmeg together.
either stir in a bowl with the blueberries or pour the mixture over the blueberries.
Place the pie crust on a parchment-lined baking sheet or in a cast-iron skillet.
Place the blueberry mixture or add blueberries and pour sugar mixture over top.
Fold the edges of the pie crust over the top of the blueberries about 2 inches all the way around the whole edge, it's ok if it overlaps.
Add the butter to the center of the blueberries, it'll melt down adn give the galette a delicious flavor.
Brush the top of the pie crust with heavy cream and sprinkle the sugar over the cream.
Bake for 25 minutes or until the crust is golden on top and crisp on the bottom.