Combine the salsa, chile peppers, and onions in a nonstick pan over medium-low heat. Cook, stirring, until the liquid has evaporated and the mixture is thickened.
Add the cheese to the pot and lower the heat to low; cook until the cheese is melted.
Add hot sauce as desired.
Keep the dip warm in a chafing dish or slow cooker for serving.
Serve the dip with tortilla chips, crackers, or vegetable dippers.
Notes
Add some spice to your next gathering with this crowd-pleasing chili cheese dip!