Begin by adding 1/2 tablespoon of butter to each ramekin and adding a spoonful of onions. Microwave for 1 1/2 minutes on high, stirring after 30 seconds to distribute the melted butter.
Next, add a pinch of garlic, 1/4 cup rice, and 1/4 + 2 tablespoons broth. Cover loosely with plastic wrap and heat in the microwave at 50% power level for 2 minutes. Remove and stir. Add additional broth if necessary. Repeat heating process.
After heating for a total of 4 minutes, add the wine. About 1-2 tablespoons per ramekin should do it. Add the mushroom slices and thyme. Heat on 50% power for another minute, then add your parmesan.
Serve and enjoy!