Vegan Pot Pie with Chickpeas (Cozy Dairy-Free Dinner)

Ingredients

• 2 vegan pie crusts for a 9-inch pie, homemade or store-bought
• 1 tablespoon unsweetened oat milk, for brushing the top
• 3 tablespoons vegan butter
• 1 medium yellow onion, diced
• 2 medium carrots, diced small
• 2 celery ribs, diced
• 1 cup (150 g) peeled Yukon gold potato, diced 1/2 inch
• 3 cloves garlic, minced
• 1 teaspoon fresh thyme leaves, or 1/2 teaspoon dried thyme
• 1/2 teaspoon dried sage
• 1/2 teaspoon smoked paprika
• 1 teaspoon fine salt, plus more to taste
• 1/2 teaspoon black pepper
• 1/4 cup (30 g) all-purpose flour
• 1 1/2 cups (360 ml) vegetable broth
• 1 cup (240 ml) unsweetened oat milk
• 2 tablespoons nutritional yeast
• 1 teaspoon Dijon mustard
• 2 cans (15 oz each) chickpeas, drained and rinsed
• 1 cup (140 g) frozen peas