Ingredients

  • 1/4 cup plus 1 tablespoon extra-virgin olive oil
  • 1 large Vidalia onion (about 1 pound), sliced
  • 1 fresh thyme sprig
  • 1 small bay leaf
  • Kosher salt and freshly ground black pepper
  • 1/2 cup vegetable stock, plus more if needed

Method

  • Put a pot over medium heat and coat with the 1 tablespoon oil.
  • When the oil is hot, add the onion, thyme, and bay leaf; season with 1/2 teaspoon salt and 1/4 teaspoon pepper.
  • Cook and stir for 5 minutes, or until fragrant, but do not let the onion brown.
  • Pour in the stock and bring to a simmer, then cover the pan and reduce the heat to low.
  • Cook gently for 30 minutes, checking periodically to make sure the liquid has not completely evaporated and the onion is soupy; add a little stock if needed to keep the onion moist.
  • Remove the thyme and bay leaf.
  • Transfer the onion to a blender and pulse until slightly chunky.
  • Add the remaining 1/4 cup oil and puree until the sauce is thick and creamy.
  • Season with salt and pepper.
  • The onion sauce can be cooled, covered, and refrigerated for up to 1 day.
  • Reheat gently before serving.