If you have never caramelized onions before, you really need to try it! The onions become so sweet and delicious you will believe it is a different vegetable entirely!
I like to use Spanish onions because of their extra sweetness, they caramelize really well. Other great onions to use are vidalia onions or red onions. This can still be done with regular yellow onions, just add an extra little bit of balsamic vinegar and it may take a little longer on the stove.
This recipe should give you about 1 cup of caramelized onions. When making a batch of these onions, it is a good idea to double up. You can store them in an airtight container in the refrigerator for up to 2 weeks. Use them in all kinds of recipes or to elevate your sandwiches, quiches and salads.
1 Tbsp. Butter or Olive Oil
2 Large Spanish Onions, halved and then sliced in 1 inch thick slices
2 Tbsp. Sugar
2 Tbsp. Balsamic Vinegar
Salt and Pepper to taste
1. In a large skillet, over medium low heat, melt the butter or olive oil. Add the onions and let cook uncovered for about 30 minutes, stirring occasionally until the onions become slightly browned.
2. Sprinkle the sugar and salt and pepper over the onions and mix well. Cook for 2 minutes more.
3. Add the Balsamic Vinegar, and mix well. Cook for 10 more minutes and remove from stove.