In a medium saucepan over medium heat, melt butter until bubbly. Add mushrooms, stir to coat and cook down until they have released most of their liquid, about 5 minutes.
Stir in unsalted chicken broth, onion powder, and garlic powder and bring heat down to a simmer.
In a small bowl, whisk together milk and flour.
Stir in milk mixture and cook until soup has thickened, about 1 minute. Season to taste with pepper or favorite no salt seasoning.
Recipe makes close to a 10 oz. can of soup give or take.To make soup, add 1 cup water or unsalted chicken broth to this full recipe.You can use ½ cup chopped onion and 1 Tbsp garlic to replace onion and garlic powder if making a plain mushroom soup.You may use more mushrooms if you prefer.You may use any mushroom type you prefer. I think bellas have a good taste.