01 - Preheat oven to 375°F. Grease a Bundt pan thoroughly with nonstick cooking spray to prevent sticking.
02 - Heat a skillet over medium heat. Add ground beef and cook, breaking apart with a spoon, until browned, about 5-7 minutes. Drain excess fat from the skillet.
03 - Sprinkle taco seasoning packet over the cooked beef. Add water and stir to combine evenly. Simmer for 2-3 minutes until sauce thickens. Stir in drained black beans and remove from heat.
04 - Spread one-third of the tortilla chips evenly across the bottom of the prepared Bundt pan. Distribute one-third of the beef-bean mixture over the chips. Sprinkle with one-third of the Cheddar and Monterey Jack cheeses.
05 - Repeat the layering process two more times: chips, beef mixture, and both cheeses. Ensure the final layer is topped with cheese for a golden, bubbly finish.
06 - Place the Bundt pan in the center of the oven. Bake for 15-18 minutes until cheese is completely melted and bubbly.
07 - Remove from oven and let cool for 3-5 minutes to set. Carefully invert the Bundt pan onto a large serving platter to release the nacho ring.
08 - Scatter diced tomatoes, black olives, green onions, jalapeño slices, and cilantro over the top. Add dollops of sour cream and salsa. Distribute diced avocado around the base.
09 - Serve while warm and cheese is melted. Guests can pull portions from the ring for easy sharing.