Vegetarian Pot Pie

Bahan-bahan (4 porsi)

• 3 tablespoons unsalted butter
• 10 ounces cremini baby bella mushrooms
• 2 medium stalks celery (diced (about a slightly heaping 1/2 cup))
• 1 ½ teaspoons garlic powder
• ½ teaspoon kosher salt
• ¼ teaspoon ground black pepper
• ¼ cup all-purpose flour (swap 1:1 gluten free flour to make GF)
• 2 cups unsweetened almond milk or milk of choice
• 1 (15-ounce) can reduced sodium white beans (rinsed and drained (or 1 ½ cups cooked white beans))
• 1 (12-ounce) bag mixed peas and carrots (or mixed frozen vegetables of choice (no need to thaw))
• ½ cup frozen pearl onions (no need to thaw)
• 1 tablespoon chopped fresh thyme (or 1 teaspoon dried thyme)
• 1 tablespoon balsamic vinegar
• 1 prepared pie crust
• 1 egg (lightly beaten with 1 tablespoon water to create an egg wash)