Step 1 Cut potatoes into 5mm slices. Place in an oven bag and tie bag loosely (or use microwave dish with a close-fitting lid). Microwave potatoes on high (100%) for 6-8 minutes until just tender.

Step 2 Heat oil in a large frying pan over a high heat. Add mince and onion. Cook, stirring frequently, until onion is soft and mince is lightly brown. Stir in flour and spices (if using) and cook for 1-2 minutes before stirring in tomatoes. Continue cooking, stirring, until mixture boils and thickens. Season to taste with salt and pepper.

Step 3 Preheat oven to 180ºC. Spray a shallow 10-12 cup-capacity ovenproof dish with a little oil and spread with one-third of the potato. Cover with half the mince, one-third of the potato, then the remaining mince. Top with the remaining potato. Press down the top layer of potatoes to flatten.

Step 4 To make topping, whisk all ingredients, except paprika, together. Pour topping evenly over mince mixture then dust the top with paprika. Place dish in oven and bake uncovered for about 30 minutes.

Step 5 Remove from oven and leave to stand for a few minutes before serving as a main meal with cooked green vegetables or a green salad.