Low FODMAP Chicken Pot Pie - FODMAP Everyday

Ingredients

• 4 cups (560 g) cubed or shredded cooked chicken, (white or dark meat, or a combo, at room temperature)
• 1/2 cup (75 g) frozen peas; (no need to defrost)
• 1 pound (455 g) diced peeled potatoes; (I like Yukon gold)
• 2 medium carrots, (trimmed, peeled and diced)
• 1/2 cup (113 g; 1 stick) unsalted butter, (cut into pieces)
• 1/2 cup (36 g) chopped leeks, (green parts only)
• ¼ cup (16 g) chopped scallions, (green parts only)
• 4- ounces (115 g) trimmed oyster mushrooms, (chopped)
• ½ teaspoon dry rubbed sage
• ½ teaspoon dried thyme
• 1/2 cup (73 g) low FODMAP gluten-free all-purpose flour
• 2 1/2 cups (600 ml) low FODMAP Chicken Stock
• Kosher salt
• Freshly ground black pepper
• 1 half batch Low FODMAP All-Butter Pie Crust, (rolled out, unbaked)