Hidden Vegetable Bolognese

Ingredients

• 1 Tbsp. olive oil
• 1 small onion, finely chopped
• 1 small leek, thinly sliced
• ½ stick celery, diced
• ¼ small red pepper, diced
• 1 small carrot, peeled and grated
• ½ apple, peeled, cored and grated
• 1 clove garlic, crushed
• 14 oz. chopped tomatoes
• 1 lb. minced beef
• 4 Tbsp. tomato puree
• 2 Tbsp. ketchup
• 9 oz. beef stock
• ¼ tsp. dried oregano