Preheat your oven to 375°F (190°C). Get a large baking sheet or oven-proof dish ready.

In a skillet over medium heat, cook the ground beef until it's no longer pink, breaking it up with a spoon as it cooks. Drain any excess fat.

Stir in the taco seasoning and water. Bring to a simmer, then reduce the heat and let it cook until the mixture has thickened, about 5 minutes. Remove from heat.

Spread a layer of Doritos on the baking sheet or dish, creating a base for your nachos. You might not use the entire bag, depending on the size of your dish.

Spoon the seasoned ground beef evenly over the Doritos.

Sprinkle both the cheddar and Monterey Jack cheeses over the top of the beef.

Add the sliced jalapeños and black olives (and any other toppings you’d like to heat up).

Bake in the preheated oven for about 5-10 minutes, or until the cheese is fully melted and bubbly.

Once out of the oven, top the nachos with the diced tomatoes, sliced green onions, and any other fresh toppings you prefer.

Serve the Doritos nachos immediately while hot, with sides of sour cream, guacamole, and salsa for guests to add to their liking.