Potatoes and Green Beans with Cheeze Sauce

I steamed some potatoes and beans then topped with this great cheeze sauce:

1 tbsp oil
1/2 cup chopped onion
1 cup veg broth
1/2 nutritional yeast
1/8 tsp turmeric
Salt and fresh ground pepper
1 tablespoon cornstarch dissolved in 2 tbsp water
2 tsp fresh lemon juice
1/2 tsp yellow mustard
1/2 cups almond milk

In a small sauce pan,, heat the oil over medium heat. Add the onion, cover, and cook until soft.. Stir in the broth and nutritional yeast, turmeric, and salt and pepper then simmer, stirring often until mixture starts to thicken and bubble. Whisk in the cornstarch and cook 2 minutes longer until thickened.
With an immersible blender, blend until smooth. Add lemon juice, mustard and almond milk and blend until smooth. Heat over low heat, stirring until hot.
This is really good with pasta or steamed veggies.