Creating a Blueberry Peach Galette is as straightforward as it is rewarding. Follow these simple steps to bake this delicious dessert:

1. Preheat the oven to 375°F (190°C). This ensures that your galette bakes evenly and develops a beautiful golden crust.
2. In a bowl, mix blueberries, peach slices, sugar, cornstarch, vanilla, and lemon juice. This mixture will create a luscious filling that’s both sweet and tangy.
3. Roll out the pie crust on a baking sheet. Aim for a rough circle to maintain the rustic charm of a galette.
4. Spoon the fruit mixture onto the center of the crust, leaving a border around the edges. This border is crucial for folding the crust over the filling.
5. Fold the edges of the crust over the fruit, pleating as needed. This step adds to the rustic appeal and ensures the filling stays in place.
6. Brush the crust with an egg or egg wash alternative. This helps the crust achieve a golden, glossy finish.
7. Dot with small pieces of butter. These will melt during baking, adding richness to the filling.
8. Bake for 30-35 minutes until the crust is golden and the filling is bubbly. This is when the magic happens, as the fruits soften and their juices meld with the sugar and cornstarch.
9. Let cool slightly before serving. This allows the filling to set and makes slicing easier.