My Ultimate Creamy Mushroom Quiche Recipe So Easy

Ingredients

• 1 1/4 cups (150g) all-purpose flour, plus extra for dusting
• 1/2 teaspoon (2.5ml) salt
• 1/2 cup (115g) unsalted butter, very cold and cubed
• 3-5 tablespoons (45-75ml) ice water
• 1 tablespoon (15ml) olive oil
• 1 pound (450g) mixed mushrooms (e.g., cremini, shiitake, oyster), sliced
• 1 small onion, finely chopped
• 2 cloves garlic, minced
• 1/4 teaspoon (1.25ml) dried thyme
• 1/4 teaspoon (1.25ml) salt
• 1/4 teaspoon (1.25ml) black pepper
• 4 large eggs
• 1 1/2 cups (355ml) heavy cream
• 1/2 cup (60g) grated Gruyère cheese (or Swiss)
• Fresh parsley, chopped, for garnish (optional)