Spicy Butter-Soy Chicken

This simple stir-fry was inspired by Filipino salpicao, a dish that dresses tender cubes of beef with a garlicky soy-butter sauce. Lean, mild-tasting chicken breasts get a big savory-sweet flavor boost from just a few high-impact ingredients. We like the mild burn that results when the seeds are left in the serranos, but you can remove the seeds for less heat. Serve with rice to soak up the sauce.