Heat the olive oil over low heat. Add the onions and cook, stirring often, until very tender, about 10 to 15 minutes.
2 Tablespoons extra virgin olive oil, 2 cups yellow onions
Stir in the thyme.
1 teaspoon dried thyme
Give the vegetable broth mixture a good stir and slowly add it to the onions. Stir often until the gravy has thickened to your desired consistency. Add salt and pepper, to taste, and serve.
salt and pepper
Notes
Store leftover gravy in an airtight container in the refrigerator for 3 to 4 days, or freeze it for up to 3 months. If the gravy is too thick when reheating it on the stove, thin it out with a little water or vegetable broth, then add additional seasonings, if needed.Prefer a smooth gravy? Use an immersion blender or carefully transfer it to a regular blender and blend it before serving.