01 - Warm 2 tablespoons of olive oil in a large skillet over medium heat.
02 - Add the thinly sliced onions and sauté for 8 to 10 minutes, stirring occasionally until softened and lightly golden.
03 - Whisk together balsamic vinegar, maple syrup, ground turmeric, smoked paprika, black pepper, and sea salt in a small bowl.
04 - Pour the prepared glaze over the onions and stir to coat evenly.
05 - Reduce heat to low and cook for an additional 12 to 15 minutes, stirring occasionally until onions are deeply caramelized and the glaze has thickened.
06 - Taste and adjust seasoning if necessary before serving.
07 - Serve warm, garnished with fresh chopped parsley if desired.