Peel, slice, and roughly chop 1 or 2 sweet yellow onions. 

Place a small pot (with lid) onto medium heat. Add 1 tablespoon of olive oil to the pot. 

Once the oil is shimmering, add all of your onion and then add a pinch of salt and ground black pepper. 

Stir the onions and then place the lid on the pot and cook for 2 minutes. 

Remove the lid, and stir everything again. Place the lid back on, and cook for another 2 minutes with the lid on followed by another big stir. 

At this point, you should be around 6 minutes of total cook time and the onions should have started to soften and might start looking lightly browned around the edges. If you see brown bits, add 2 tablespoons of water to the pot. Stir the onions and place the lid back on the pot. Cook for another 2 minutes remove the lid, stir, and cook for an addition 2 minutes with the lid on. 

This should be around the 10-minute mark. The onions should be softened fairly well and there should be a bit of browning in the onions. Add 1 tablespoon of brown sugar per onion to the pot and stir well. 

Cook the onions for an additional 4 to 5 minutes or until they have started to look brown and are softened. Remove from the heat and add to a sandwich or taco. If you have some onions left over, place them in a sealed container in the fridge to be used within a week. They can be warmed up in the microwave or briefly in a skillet or pan.