Start by dicing cremini or another brown mushrooms into small pieces. Melt the first amount of butter in a large saute pan over low heat. Add the mushrooms to the butter and stir them to coat. Cover the pan with a lid and cook the mushrooms way down until they’ve tenderized, shrunken, and absorbed most of the butter.
Step 2
Melt the second amount of butter in the saute pan on the lowest heat setting. After the butter has melted, stir the tapioca flour into the pan. Stir continually while the butter thickens with the flour, foams up, and begins to turn golden. Then, you can pour chicken broth into the pan.
Step 3
Season the pan with salt, garlic powder, and onion powder. Bring the pan to a simmer, then let it bubble over medium heat until the ingredients reduce to a gravy. The gravy is done when it can coat the back of a wooden spoon and some small pieces of mushroom may even stick. Leave the gravy aside to cool down for 5 minutes and thicken before serving.