Start by making the pastry dough. In a large bowl, combine the flour and salt. Gently whisk them together to ensure an even mix. It’s important to keep your butter chilled, so from the freezer it goes. Using two knives or a pastry cutter, cut the butter into the flour mixture until it resembles coarse sand. The texture is key here, so be patient and keep working.
Now, in a separate small bowl, whisk together the sour cream, lemon juice, and ice water. This mixture adds moisture and tang to your dough. Gradually pour it into the butter and flour mixture. Use a wooden spoon or your fingers to gently fold in the liquid until large lumps start to form. You want it to hold together, so don’t overwork the dough.
Once you’ve formed the dough into a ball, wrap it in plastic wrap and place it in the refrigerator for an hour. This chilling step is crucial as it allows the butter to firm up and will ensure a flaky crust. While the dough chills, you can prepare your filling!
In a bowl, toss the sliced peaches and blueberries together with coconut palm sugar. The sugar helps to release the juices from the fruits, enhancing their flavor. Set this mixture aside as we move on to preheating the oven.
Preheat your oven to 400 degrees Fahrenheit. Line a baking sheet with parchment paper. This will prevent sticking and make cleanup easier. While the oven heats up, take the dough out of the refrigerator.
On a lightly floured work surface, roll out the dough into a 12 to 14 inch round. It doesn’t have to be perfect; the rustic look is part of the charm! Carefully transfer the rolled dough onto the prepared baking sheet.
Now comes the fun part: assembling your galette! Arrange the peach mixture over the center of the dough, leaving a 2-inch border. This will create the lovely crust that cradles the fruits. Gently fold the border over the filling, overlapping as needed, to create a pleated edge. The center of the galette should remain open, showcasing the beautiful peaches.
For a golden finish, brush the crust with the egg wash. If you’re feeling indulgent, sprinkle a little more sugar over the crust and scatter some sliced almonds on top for an added crunch. This gives it a lovely shine and a touch of elegance.
Place the baking sheet in the preheated oven and bake for about 45 minutes, or until the crust turns golden brown and the fruits are bubbling. The aroma wafting through your kitchen will be irresistible, so be prepared to enjoy!
Once baked, let the galette cool for a few minutes before slicing. Serve warm or at room temperature, and watch it disappear quickly!
