Preheat your oven to 400°F (200°C). This is the ideal temperature for getting those nachos crispy and melty.
In a skillet over medium heat, add the ground beef. Cook until browned, breaking it apart with a spatula. Once fully cooked, drain any excess fat. Add your homemade taco seasoning (or store-bought) to the beef, along with a splash of water if needed. Stir until well combined and let it simmer for a few minutes.
On a large sheet pan, spread an even layer of tortilla chips. This is the base for your nachos, so make sure every chip gets some delicious toppings!
Spread the refried beans over the tortilla chips, followed by the seasoned ground beef. Next, sprinkle the corn, sliced olives, black beans, and salsa evenly across the nachos.
Generously sprinkle both the mild cheddar and jack cheese over the top, ensuring that every inch is covered with cheesy goodness.
Place the sheet pan in the preheated oven and bake for about 10-15 minutes, or until the cheese is melted and bubbly. Keep an eye on them to prevent burning!
Once out of the oven, let them cool for a minute. Top with chopped cilantro, diced roma tomatoes, and any additional toppings you desire, such as jalapeños.
Serve your Oven Baked Sheet Pan Nachos hot, with sides of sour cream and extra salsa for dipping. Gather your friends and family, and dig in!