Mini shepherd's pies with cheesy potato topping

Ingredients

• Cheesy potato topping
• 2 large potatoes, peeled, cut into chunks
• 1/2 cup grated tasty cheese
• 1/3 cup warm milk
• 20 grams butter
• Mini shepherd's pies with cheesy potato toppings
• 1 tablespoon olive oil
• 1 onion, finely chopped
• 1 carrot, finely chopped
• 2 garlic cloves, crushed
• 300 grams beef mince
• 150 grams mushrooms, thinly sliced
• 400 grams can diced tomatoes
• 1 cup beef stock
• 1 tablespoon worcestershire sauce
• 1/2 cup frozen peas
• 1 tablespoon chopped parsley
• 2 teaspoons finely chopped rosemary salad, to serve