Preheat oven to 425 degrees and line a large, rimmed baking sheet with foil.
Heat a large skillet over medium heat and add a tablespoon of olive oil. Add onions and cook, stirring often, until soft; 5-6 minutes. Add ground beef and cook until no longer pink; 5-6 minutes. Drain grease.
Add garlic, taco seasoning and a pinch of salt and cook for about 5 more minutes. Stir in refried beans and water.
Arrange half of the tortilla chips on the sheet pan. Top with half of the beef mixture, half of the cheese, half of olives and half of the pickled jalapenos. Repeat with the remaining ingredients.
Bake in the 425 degree oven for 10-15 minutes, or until the cheese is melted.
Top with diced tomatoes, sliced green onions and pickled jalapenos. Serve with guacamole and sour cream.
Notes
Servings: This recipe will make about 6 servings for a meal and 8-10 servings as an appetizer.Storing and Reheating: Nachos are best served fresh; they tend to get soggy if refrigerated. If you have some leftover and want to save them, store in an airtight container for 1-2 days. Scrape off any sour cream or guacamole before reheating. Reheat in the microwave for 30 seconds.