Making Taco Bell Nacho Fries is simple if you follow these steps:

1. Preheat Oven: Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper to prevent sticking.
2. Prepare Potatoes: Wash and peel the russet potatoes. Cut them into thin fries or wedges, ensuring they are evenly sized for even cooking.
3. Season Fries: In a large bowl, toss the potato fries with olive oil and taco seasoning until they are fully coated.
4. Bake Fries: Spread the seasoned fries in a single layer on the prepared baking sheet. Bake them in the preheated oven for 25-30 minutes or until they are golden brown and crispy, flipping them halfway through.
5. Add Cheese: Once the fries are baked, remove them from the oven. Sprinkle shredded cheddar cheese generously over the hot fries. Return them to the oven for an additional 2-3 minutes or until the cheese is melted and bubbly.
6. Prepare Nacho Cheese Sauce: While the fries are baking, heat the nacho cheese sauce in a small saucepan over low heat. Stir until warm and creamy.
7. Serve: Remove the fries from the oven and drizzle the warm nacho cheese sauce over the top. Add jalapeño slices and garnish with chopped green onions and sour cream, if desired.

These simple instructions will guide you in creating your own Taco Bell Nacho Fries with ease.