Quick Tray Bake Nachos

• 1 tbsp olive oil
• 500 g beef mince
• 4 tsp mexican or taco seasoning
• 400 g tin black beans, drained
• 150 g white corn chips
• 250 g cooked rice (microwavable packet)
• 400 g tin corn kernels, drained
• 200 g tomatoes, diced
• 0.5 bunch coriander (cilantro), chopped
• 1 avocado, cubed
• 1 lime, half juiced and half cut into wedges
• 50 g feta cheese