Swiss Chard and Mushroom Galette - Lamole di Lamole

Ingredients

• 1 cup all-purpose flour
• 1 cup whole wheat flour
• 1 teaspoon kosher salt
• ¾ cup (1½ sticks) chilled unsalted butter, cut into pieces
• 1 tablespoon apple cider vinegar
• 1 cup ricotta cheese
• Kosher salt and freshly ground black pepper
• 3 tablespoons olive oil
• 4 ounces maitake mushrooms, torn, and/or cremini mushrooms, thinly sliced
• 1 garlic clove, finely chopped
• 1 bunch large Swiss chard, ribs and stems removed, leaves cut into bite-size pieces
• 2 tablespoons of flour (for baking)
• All-purpose flour (for parchment)
• 1 large egg, beaten
• 1 cup mixed fresh tender herbs (such as flat-leaf parsley, marjoram, dill, and chives)
• 1 teaspoon finely grated lemon zest
• 1 teaspoon fresh lemon juice
• Flaky sea salt