Late Night Munchies Recipe - Breakfast Nachos

One late December eve, I was struck with a fierce case of the munchies. I skimmed through my fridge and cupboards to see what sort of ingredients I had. One jumbo bag of tortilla chips was screaming at me from it's shelf. I placed it on the counter. My first instinct was to grab some salsa, but to my dismay there was none, anywhere. "What else do I have that would be good on nachos?" I wondered aloud in my empty kitchen.
Cheese. Of course, cheese. I found the half block of cheddar right away and began to grate it. However, I knew that my hunger was too strong to be satisfied by only a measly plate of chips and cheese. I needed more sustenance on these beautiful, golden corn chips. I knew that I had no beef or beans in the kitchen, but I suddenly remembered the 1 pound of breakfast sausage that I had bought the day before and I realized what I must do next. "I must make breakfast nachos." I declared to myself in my empty kitchen. "And so shall it be."
I placed the tube of sausage on the counter along with a large yellow onion. I frantically searched again for some sign of beans that I could warm up, but I came up short. Diced tomatoes would have been great, too, but after a careful inspection, I didn't even have a can of spaghetti sauce, let alone a fresh tomato. With a defeated sigh, I forged ahead. I was determined to make "breakfast nachos" with what I had.