Cheesy Potato and Beef Casserole

Ingredients

• For the potatoes: 3 medium potatoes, cubed
• salt
• 1 teaspoon peppercorns
• 3 bay leaves
• 4 sage leaves
• 4 fresh basil leaves For the beef: 1 tablespoon vegetable oil
• 1 medium onion, chopped
• 7 ounces of beef tenderloin, cut into pieces
• pepper
• 2 teaspoons of garlic powder
• 1 red chili, sliced
• 1 green chili, sliced
• 1 teaspoon soy sauce For the casserole: ⅔ cup parmesan, grated
• 5 ounces of cherry tomatoes
• ½ cup low moisture mozzarella, grated
• 1 tablespoon olive oil