Sliced green onions, for garnish
Sesame seeds, for garnish
1 Large summer squash, sliced into thin strips
1 Large zucchini, sliced into thin strips
1 Large red bell pepper, thinly sliced
2 tsp. Extra-virgin olive oil
1 pound Skirt steak, cut into thin 2"-long strips
1/4 tsp. Cayenne pepper
1 tbsp. Dijon mustard
2 cloves Garlic, minced
Juice of 2 limes
3/4 cup Brown sugar
1 cup Low-sodium soy sauce