Preheat oven to 400 degrees.
Prepare a baking sheet by lining it with parchment paper.
Get out and measure all of your ingredients.
Lay your pie crust onto the parchment paper and set aside.
Thinly slice, about ¼” medallions from the heirloom tomatoes, and cherry tomatoes.
Pat each slice dry with a paper towel.
Lightly salt the tomatoes and let sit for about 5 minutes. This will help the tomatoes to release some of their liquid to help keep your galette from becoming soggy. After 5 minutes pat dry again with more paper towels.
Shred your cheese.
Spread the 1 ½ cups of shredded smoked gouda cheese evenly over the pie crust, leaving about an each around all the edges.
Layer the heirloom tomatoes on top of the cheese, it is ok for them to overlap. Layer the cherry tomatoes on top of the heirloom tomatoes.
Sprinkle everything with the minced garlic, fresh cracked pepper, and a light sprinkle of salt and red pepper flakes.
Fold the very edges, about 1”, of the pie crust up and inward, on top of the filling.
Mix together the egg and 2 Tablespoons of water to create an egg wash.
Gently brush the egg wash over the exposed pie crust edges.
Then sprinkle with a little flake or sea salt.
Bake at 400 degrees for approximately 45 mins - 1 hour.
Galette is done with the edges are golden and brown, and the tomatoes have roasted.
Remove from the oven and let sit for at least 5 minutes before serving.
Garnish with fresh basil and a drizzle of quality balsamic vinegar.
Slice and serve. Enjoy every bite.