Two pieces of cookware, one easier dinner
Use a large enough baking sheet to spread the mushrooms in one layer. A deep roasting dish holds moisture around them and makes browning slower. If your sheet is small, split the mushrooms across two pans and switch their positions halfway through.
Cut the mushrooms into substantial pieces
Small cremini can be quartered; larger ones can be sliced about half an inch thick. These pieces shrink but remain large enough to notice among the rice. Very thin slices tend to become dry scraps before the rest of the tray colors.
Toss with oil and salt, then roast until their edges darken and most of the liquid has evaporated. Stir once so a second surface can meet the hot metal. Use the color as well as the time, particularly if the mushrooms were damp after washing.
Keep the rice simple and covered
Long-grain white rice gives a loose, spoonable bowl. Use the water amount on the package if it differs from the recipe. After the pot comes to a simmer, cover it and lower the heat. A burner that stays fierce on its lowest setting may need a heat diffuser or a different burner.
Let the cooked rice rest covered before fluffing. A few minutes off the heat help finish the pot evenly. If you find a little moisture at the bottom after resting, leave it uncovered briefly over very low heat, watching closely.
Fold, taste, and add something fresh
Scrape the mushrooms and any tasty browned bits into the rice. Fold gently with a wide spoon rather than stirring forcefully. Butter coats the grains, while scallions give the bowl a fresh note. Taste before adding extra salt because the mushrooms already carry some.
Serve with a fried egg, a spoonful of yogurt, or beans in a light broth. For lunch the next day, pack the rice in shallow containers and chill promptly. Add fresh scallions after reheating instead of expecting yesterday's green garnish to stay bright.
