Loaded Sheet Pan Nachos

Ingredients

• 1 tablespoon olive oil -
• 1 medium onion (about 1 cup), chopped -
• 1 pound ground beef (80-20 mix) -
• 1 teaspoon chili powder -
• 1 teaspoon coriander -
• 1/2 teaspoon dried oregano -
• 3/4 teaspoon Morton kosher salt (maybe more) -
• 1 (16-ounce) bag tortilla chips, preferably thick and sturdy -
• 1 bell pepper, cored, halved and chopped (about 1 cup) -
• 1 (15-ounce) can black beans, rinsed and drained -
• 1 cup frozen corn -
• 1 (2.25-ounce) can sliced black olives, about 1/4 cup -
• 1 to 1 1/2 cups grated cheddar cheese or shredded Mexican cheese blend -
• 1 avocado, cubed -
• 2 scallions, green ends sliced thinly -
• 1 plum tomato, diced -
• 1/2 cup cilantro, chopped -
• 1 jalapeño pepper, seeded and thinly sliced -
• 1/3 cup sour cream -
• For the cilantro-lime crème: -
• 1 cup sour cream -
• Juice of one lime -
• 1/3 cup cilantro -
• Pinch of salt -