Preheat oven to 170°C fan bake.
Cook the mince:
Heat a large pan over medium heat. Add the beef mince and diced onion. Cook until the mince is browned and the onion has softened.
Season well:
Add the nacho powder, garlic powder, onion powder, and salt. Stir through to evenly coat the mince.
Add the beans and sauce base:
Add the tin of beans, tomato paste, water, and frozen corn. Mix well and bring to a gentle simmer.
Simmer the mixture:
Let the filling cook for 5–7 minutes, or until slightly thickened.
Tip: The beef mixture works best when it’s still hot for stacking.
Assemble the stacks (makes two):
On an oven tray or in two baking dishes, place the first tortilla down.
Add a spoonful of the hot mince mixture, sprinkle over a generous handful of cheese, then repeat with 5–6 layers for each stack.
Top with cheese:
Finish each stack with a final tortilla and plenty of cheese on top.
Bake:
Bake for 10–15 minutes, or until the cheese is golden and everything is heated through.
Cover with foil if the top is browning too quickly.
Garnish:
Top with mashed avocado, whipped sour cream, and sprinkle with spring onions or fresh parsley.
Slice and serve warm.