Ham and cheese croquettes

Ingredients

• 60 gram butter
• 1 onion, finely chopped
• 100 gram leftover ham, finely chopped
• 1/4 cup plain flour
• 1 1/4 cup milk
• 150 gram manchego or parmesan cheese, grated
• 1 teaspoon smoked paprika
• 1/4 cup chopped flat-leaf parsley leaves
• 2 eggs, lightly beaten
• 2 cup panko breadcrumbs
• vegetable oil, to deep-fry
• Speedy tomato sauce
• 1 tablespoon olive oil
• 2 clove garlic, crushed
• 1/2 teaspoon chilli flakes (optional)
• 400 gram canned crushed tomatoes
• 1 teaspoon caster sugar
• salt and black pepper