Sweet and Savory Caramelized Onion Delight

1Heat a large skillet over medium heat and add the butter and olive oil (1 tablespoon), allowing them to melt and combine.

2Add the thinly sliced onions to the skillet, stirring to coat them in the butter and oil mixture.

3Sprinkle the sugar (1 teaspoon), salt (½ teaspoon), and black pepper (¼ teaspoon) over the onions, stirring well to combine.

4Reduce the heat to low and cook the onions slowly, stirring occasionally, for about 30-40 minutes until they are soft, golden brown, and caramelized.

5If desired, add the balsamic vinegar (1 tablespoon) during the last 5 minutes of cooking for added depth of flavor, stirring to combine.

6Once the onions are caramelized, remove them from heat and let them cool slightly before serving.

7Garnish with fresh thyme leaves if desired.