Nachos pie

Ingredients

• 1 tablespoon olive oil
• 1 medium (150g) brown onion, chopped
• 2 clove garlic, chopped
• 500 gram beef mince
• 2 teaspoon smoked paprika
• 2 teaspoon ground coriander
• 2 teaspoon ground cumin
• 2 tablespoon plain flour
• 400 gram can chopped tomatoes
• 2 teaspoon sugar
• 1/2 cup (125ml) water
• 300 gram sour cream
• 1 cup (125g) grated cheddar cheese
• 1 pack (200g) plain corn chips
• iceberg lettuce, tomato wedges, tomato salsa, to serve