Spicy Shrimp without pasta tomatillos

2 1/2 lbs baby bok choy , trimmed and sliced lengthwise 3 tablespoons butter 2 bunches scallions , sliced 4 garlic cloves , finely chopped 3 tablespoons soy[...]

1 1/2 lbs large shrimp , peeled and deveined 4 scallions , white and green parts thinly sliced but kept separate 2 garlic cloves , minced 2 teaspoons[...]