Savory French Onion & Gruyère Galette with Thyme-Infused Butter

Ingredients

• 2 cups all-purpose flour, sifted
• 1 teaspoon salt
• 1 cup unsalted butter, cold, cubed
• 1 cup ice water
• 4 large yellow onions, thinly sliced
• 2 tablespoons olive oil
• 1 cup Gruyère cheese, grated
• 1 teaspoon fresh thyme leaves, chopped
• 1 egg egg, beaten for egg wash

• 2 tablespoons butter, melted
• 1 teaspoon fresh thyme, chopped

Method

1. 01
   In a large bowl, combine sifted flour and salt. Add cold, cubed butter and rub into the flour until the mixture resembles coarse crumbs.
2. 02
   Gradually add ice water, a tablespoon at a time, and mix until the dough comes together. Form into a disc, wrap in plastic, and refrigerate for at least 30 minutes.
3. 03
   In a large skillet, heat olive oil over medium heat. Add sliced onions and cook, stirring occasionally, until they are caramelized and golden brown, about 25 minutes. Season with salt to taste.
4. 04
   Preheat oven to 400°F (200°C). Roll out the chilled dough on a floured surface to about 1/8-inch thick, then transfer to a parchment-lined baking sheet.
5. 05
   Spread the caramelized onions over the dough, leaving a 2-inch border. Sprinkle grated Gruyère cheese and chopped thyme over the onions.
6. 06
   Fold the edges of the dough over the filling, pleating as you go. Brush the dough with beaten egg for a golden crust.
7. 07
   Bake the galette in the preheated oven for 30-35 minutes, until the crust is golden and the cheese is bubbly.
8. 08
   Meanwhile, prepare the thyme-infused butter by melting butter in a small saucepan and adding chopped thyme. Brush the finished galette with the thyme butter before serving.