Vegan Mushroom Pot Pie

Name: Vegan Mushroom Pot Pie
Prep time: 15 min
Cook time: 35 min
Total time: 50 min
Yield: 4
Ingredients: Ingredients; 2 tablespoons olive oil or vegan butter; 1 small onion, chopped; 3 cloves garlic, minced; 2 cups mushrooms, sliced (such as cremini or button); 2 carrots, diced; 2 celery stalks, diced; 1/2 cup frozen peas; 1 teaspoon dried thyme; 1 teaspoon dried rosemary; 1/2 teaspoon salt (adjust to taste); 1/2 teaspoon black pepper; 1/4 cup all-purpose flour (or gluten-free flour); 2 cups vegetable broth; 1/2 cup unsweetened plant-based milk (such as almond or oat); 1 tablespoon soy sauce or tamari (for gluten-free); 1 sheet vegan puff pastry (store-bought or homemade, thawed)