Butternut Squash, Apple, and Onion Galette

There is a reason there isn't a picture - next time I will put a piece of foil under the whole thing to make tranferring it from the cookie sheet to the platter easier.

I also used refrigerated pie crusts (both of them that come in the box) instead of making my own dough. I included the dough recipe but cannot vouch for it. If you don't make our own pie crust, the preparation is quick as you leave the skin on the apples and squash.

I used a combination of acorn and butternut squash too. The Dijion whole grain mustard from trader joes worked well. Leftovers were equally as good the next day.

Ingredients
Dough:
1 1/4 cups all-purpose flour
Pinch salt
8 tablespoons (1 stick) cold unsalted butter, diced
1 large egg, lightly beaten

Filling:
1 large baking apple, such as Rome Beauty or Cortland
1 small or 1/2 medium butternut squash (about 3/4 pounds), halved, seeded, and skin on
1 small yellow onion, peeled, root end trimmed but intact
3 tablespoons unsalted butter, melted
2 teaspoons chopped fresh rosemary leaves
2 teaspoons chopped fresh thyme leaves
Kosher salt and freshly ground black pepper
2 tablespoons whole-grain mustard
1/3 cup crumbled Stilton or other blue cheese (about 1 1/2 ounces)** Since I hate blue cheese, I used about the same amount of feta in its place

Directions

Preheat the oven to 400 degrees F.

For the dough: Pulse the flour and salt together in a food processor. Add the butter and pulse about 10 times until the mixture resembles coarse cornmeal with a few bean-size bits of butter in it. Add the egg and pulse 1 to 2 times more; don't let the dough form a mass around the blade. If the dough seems very dry, add up to 1 tablespoon of cold water, 1 teaspoon at a time, and pulsing briefly. Remove the blade and bring the dough together by hand. Shape the dough into a disk, wrap it in plastic wrap, and refrigerate at least 1 hour.

For the filling: Halve and core the apple. Cut each 1/2 into 8 wedges and put them in a large bowl. Slice the squash and cut the onion into wedges so that both are as thick as the apple wedges, and add them to the apples. Add the butter, rosemary, and thyme and toss gently to combine. Don't get distracted like I did, the butter will solidify quickly on you. Season with salt and pepper and toss again.

Roll the dough on a lightly floured surface into a 12-inch disk. Transfer the dough to a baking sheet and brush with mustard. Starting 2 inches from the edge, casually alternate pieces of apple, squash, and onion in overlapping circles—if you have extra pieces of one or another, tuck them in where you can or double them up until to use all the filling. Fold and pleat the dough over the edge of the filling. Bake until the crust is brown and the apples, squash, and onions are tender and caramelized, about 55 minutes. Scatter the cheese over the filling and bake until melted, about 5 minutes more. Cool the galette briefly on a wire rack. Cut into wedges and serve.