Combine butter, garlic, and thyme in small bowl; set aside.
Heat oil in 12-inch nonstick skillet over medium heat until just smoking.
Add beans, 1/4 teaspoon salt, and 1/8 teaspoon pepper; cook, stirring occasionally,
until spotty brown, 4 to 6 minutes.
Add water, cover, and cook until beans are bright green and still crisp,
about 2 minutes.
Remove cover, increase heat to high, and cook until water evaporates,
30 to 60 seconds.
Add butter mixture and continue to cook, stirring frequently, until beans are
crisp-tender, lightly browned, and beginning to wrinkle, 1 to 3 minutes longer.
Transfer beans to serving bowl, toss with lemon juice and parsley;
adjust seasoning with salt and pepper. Serve immediately.