Prepare the potatoes

• Cut the potatoes into fries and pat them dry.
• Toss with the olive oil, salt and black pepper in a bowl.
• Spread in a single layer on a baking tray.

Bake the fries

• Bake at 220 °C, turning halfway, until golden and crisp.

Make the chilli

• Brown the beef mince in a frying pan over high heat.
• Add the onion and garlic and cook until softened.
• Stir in the chilli powder, cumin and smoked paprika.

Simmer the chilli

• Add the chopped tomatoes, tomato purée and kidney beans.
• Simmer until thickened, stirring occasionally.

Assemble and melt the cheese

• Pile the fries on the tray and spoon the chilli over them.
• Scatter the cheddar and mozzarella on top.
• Return to the oven until the cheese is melted and bubbling.

Serve

• Finish with the sliced spring onion and serve hot.