Budget-Friendly Shepherd’s Pie

Ingredients

• 2 lb. Yukon gold potatoes, peeled and cut into large pieces
• 2 cups unsweetened, unflavored plant-based milk
• Sea salt, to taste
• Freshly ground black pepper, to taste
• 1 cup coarsely chopped onion
• 1 cup coarsely chopped carrots
• 1 cup coarsely chopped celery
• 1 cup frozen corn
• 3 cloves garlic, minced
• 1½ teaspoon dried Italian seasoning, crushed
• ¼ cup certified gluten-free rolled oats
• 1 tablespoon white wine vinegar