Cheesy burger with tomato chilli relish

• 1 tbsp olive oil
• 4 Coles Brand Cheese Burger Patties
• 4 slices Coles Brand Colby Cheese
• 4 Coles Bakery Ciabatta Rolls, toasted
• 8 baby gem lettuce leaves
• 200g drained beetroot slices
• 4 sandwich pickles, drained, sliced lengthways

Tomato chilli relish

• 1 tablespoon olive oil
• 1 small brown onion, chopped
• 1 garlic clove, crushed
• 1 birdseye chilli, halved, seeded, finely chopped
• 500g tomatoes, chopped
• 2 tablespoons brown sugar
• 2 tablespoons apple cider vinegar