Heat olive oil in a large skillet over medium heat. Add sliced onions and sauté for about 5 minutes until softened.

Reduce heat to low and continue cooking onions for 20-25 minutes, stirring occasionally, until caramelized.

While onions are caramelizing, bring a pot of salted water to a boil. Cook gluten-free pasta according to package instructions.

Once onions are caramelized, increase heat to medium. Add drained pasta to the skillet and mix well.

Season with salt, pepper, and fresh herbs. Serve warm, drizzled with olive oil.