1In a large sauté pan, heat one tablespoon olive oil over medium-low heat. Add beans (I left the little stem on, but you could remove them if you prefer). Cook for a few minutes, uncovered, stirring often. Add 1 tablespoon lemon juice and quickly cover with a lid to steam for a minute or two.
2 Toss and return lid to cover and continue to steam over low heat until they reach your desired texture - slightly crisp, yet for tender. Remove cover, and crumble feta over the beans and season to taste. serve warm straight from the pan so that the feta has a chance to warm a bit.
3Optionally, serve with a few wedges of lemon or a sprinkling of lemon zest!