Venison cottage pie topped with cheesy potato mash - Deliciously Yorkshire

Ingredients

• 1 tbsp olive oil
• 1 large onion, peeled and finely chopped
• 3 rashers smoky bacon, finely chopped
• 2 carrots, peeled and grated
• 520g wild minced venison
• 2 cloves garlic, crushed
• 2 tbsp tomato puree
• 250ml beef stock
• 100ml red wine
• ½ tsp dried thyme
• ½ tsp dried rosemary
• 800-900g Maris Piper potatoes peeled and cut into large dice
• 2-3 tbsp milk
• 50g butter
• 75g Cheddar cheese, grated