Budget-Friendly Shepherd's Pie

Ingredients (for 4 servings)

• 2 lb — Potatoes
• 2 cup — plant-based milk
• 1 whole — sea salt
• 1 whole — black pepper
• 1 cup — Onions
• 1 cup — carrots
• 1 cup — Celery
• 1 cup — corn
• 3 clove — Garlic
• 1½ tsp — Italian seasoning
• ¼ cup — oats
• 1 tbsp — white wine vinegar