Ideally, onion jam is meant to simmer on a stovetop until the onions are delicious and melted. But who has time for that? I played around with this recipe and figured out how to slow-cook the onions in the oven, and the results were just as good.
1. Slice the onions and jalapeño peppers into thin strips. Place in a pan with oil and mix.
2. Cover tightly and bake at 200 degrees Fahrenheit for 10–12 hours.
3. Drain liquid and serve cold or at room temperature.
For added smoky flavor, you can add a few squirts of barbecue sauce.