Preheat the oven to 400 degrees and line two baking sheets with parchment paper.
Make The Filling
In a small bowl combine cream cheese and sour cream until smooth.
8 ounces cream cheese, ½ cup sour cream
Add in shredded gruyere cheese until evenly combined.
8 ounces Gruyere cheese
Add the dill, paprika, salt, and garlic powder to the cheese mixture, stir until everything is combined.
2 tsp fresh dill, 1 tsp garlic powder, ½ tsp paprika, ¼ tsp salt
Assemble Pastries
On a clean surface lay one sheet of puff pastry, gently flattening it and rolling out any bumps until it is roughly 1 inch longer on each side.
2 packages puff pastry
Spread roughly ¼ of the cream cheese mixture onto the center of the puff pastry, in a circle. Make sure to leave at least ½ an inch of raw pastry around the edges. (putting a circle in a square will leave uneven edges and thats okay, you’ll fold over the edges in a bit.)
Add a layer of thinly sliced apples and butternut squash over the cream cheese mixture, try to not overlap them.
1 butternut squash, 1 apple
Fold over the raw edges onto the cream cheese mixture to create a rough circle that resembles a large danish.
Transfer the galette to one half of a baking pan.
Repeat the steps with the remaining 3 puff pastries.
Make an egg wash by whisking the egg with a splash of water.
1 egg
Brush the raw edges of the puff pastry with egg wash.
Bake And Serve
Bake in the oven for 20-22 minutes until the edges are golden brown. (don’t worry if the centers puff up, they will deflate when they cool)
Remove from the oven and allow to cool until easily handled.
Serve whole or sliced into six sections with a pizza cutter.
Notes
It is essential that you use thinly sliced toppings. The size and shape don't matter as long as it is thin so it will cook through in the time.
Don't stress about the shape of the danish; it's meant to be rustic. If you find it easier to create a rectangle, that works too! The important part is that you leave at least 1/2 an inch of dough to be folded over.
If you are not a fan of baked apples, add more squash and leave it off. You can also add whatever vegetables you want.
Any vegetable denser than a beet will not bake through. The beet was still tough when I tried it. However, if you really want to, you could partially cook the vegetables before putting them on.
Taste the mixture before baking; some cheeses are saltier than others, so you might want to add 1/4 tsp of salt after tasting it.
For an additional layer of sweetness, lightly drizzle hot pastries with honey or hot honey.