You are here: Home » Recipes » Sweet Onion Jam Sweet Onion Jam Recipe by mercerandsage Yield 4 cups PrintEmail Ingredients 4 slices thick cut bacon4 pounds sweet onions, peeled, halved and thinly sliced2 teaspoons kosher salt2 tablespoons extra vigin olive oil1 cup brown sugar3/4 cup balsamic vinegar Instructions Place two large saute pans over medium low heat. Add the bacon (two slices for each pan), and cook until crisp without draining fat. Remove bacon. Save for a BLT later in the day. Divide the sliced sweet onions and salt between the two pans, and saute over medium heat while stirring frequently. Add up to one tablespoon extra virgin olive oil to each pan if the onions start to look dry. Cook until the onions become translucent and begin to caramelize around the edges. Transfer onions to the slow cooker, and stir in the brown sugar and balsamic vinegar. Slow cook on the “low” setting, stirring at least every half an hour. Cook until the jam is a rich, deep brown and smells delicious. A wooden spoon pulled across the bottom of the pot should leave a trail. In my slow cooker, this took three and a half hours. Remove from heat and let cool. Store in glass jars in the refrigerator up to a month, or can and store in the pantry for up to a year. Makes two pints.