Put the beans into a saucepan, add water just to cover, and bring to a boil over medium-high heat. Boil until heated through, 2–3 minutes.
Meanwhile, in a second saucepan, melt the butter over medium heat. Add the lemon juice and cayenne, season with salt and black pepper, and whisk thoroughly. Stir in the parsley.
Drain the beans, add them to the sauce, and mix gently to coat. Serve hot.
© 2019 All rights reserved. Published by Weldon Owen.