Once they've been combined, add the broth, stir, and bring it to a boil. Reduce the heat to medium-low, cover the pot with a lid, and simmer for 15 minutes.
After that time has passed, turn off the heat and remove the lid. Add about 1 more tablespoon of butter (optional), the reserved browned mushrooms, and the parsley. Put the lid back on and let the Rice with Mushrooms rest for 10 minutes.
This Rice with Mushrooms is a satisfying and flavor-filled side dish that goes with everything. It's easy to make, and it's utterly delicious.