Preheat oven to 350°F (175°C).
Spread the drained green beans evenly into a 9x13 inch baking dish.
Distribute the crumbled bacon over the top of the green beans.
In a medium mixing bowl, whisk together the melted butter, brown sugar, soy sauce, garlic powder, and onion powder until the sugar is dissolved.
Pour the liquid mixture evenly over the green beans and bacon.
Bake uncovered for 40 minutes, allowing the sauce to thicken and glaze the beans.
Toss the beans gently before serving to redistribute the glaze and bacon.