Yes! I'm not sure how to make it vegan, but the version I know is:
On a stovetop, medium high heat with a skillet, brown the meat you're using. When it looks good, add the marsala (a quarter to a half cup per person, depending how much sauce you like).
When the meat seems cooked to the point you like, take it out and set it aside, and continue to cook down the marsala until the steam doesn't smell like alcohol (reduce it more if you feel like it). Salt to taste.
Take it off the heat and let it cool a little bit, then stir in cold butter. The reason you're using cold butter and taking the pan off the heat is that you don't want the butter to melt into a liquid - you want it to go soft enough that the marsala and butter can blend together. Ideally you're going for something that isn't runny, that's more of a mustard consistancy.
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On a stovetop, medium high heat with a skillet, brown the meat you're using. When it looks good, add the marsala (a quarter to a half cup per person, depending how much sauce you like).
When the meat seems cooked to the point you like, take it out and set it aside, and continue to cook down the marsala until the steam doesn't smell like alcohol (reduce it more if you feel like it). Salt to taste.
Take it off the heat and let it cool a little bit, then stir in cold butter. The reason you're using cold butter and taking the pan off the heat is that you don't want the butter to melt into a liquid - you want it to go soft enough that the marsala and butter can blend together. Ideally you're going for something that isn't runny, that's more of a mustard consistancy.