MEXICAN HASH BROWN BAKE

Name: MEXICAN HASH BROWN BAKE
Ingredients: Cooking oil spray; 500 g hash browns ((1lb 2oz)); 1 1/2 cups grated tasty cheese (150g), divided; 50 g baby spinach ((1.8oz)); 420 g can chilli beans ((14.8oz)); 410 g can whole corn kernels (14.5oz), divided; 2 large handfuls fresh coriander ((optional)); 5 eggs; 1/3 cup lite sour cream ((80ml)); 1 tsp ground cumin; 1/2 tsp paprika; 1/2 tsp salt; 1/4 tsp black pepper; 1 large tomato; 1 large avocado; 1/2 small red onion; 1 large handful fresh coriander ((optional)); 1/2 cup lite sour cream ((125ml))