About 30 minutes before serving or early in day cut yellow peppers into 2 x 34-inch pieces
Cut celery diagonally into 14-inch thick slices
Remove stem and strings along both edges of each pea pod
In nonstick 12-inch skillet over medium-high heat in 1 tablespoon hot olive or salad oil cook yellow peppers celery 34 teaspoon salt and 14 teaspoon black pepper stirring frequently until vegetables are tender and lightly browned about 10 minutes
Remove vegetables to bowl
In same skillet in 2 teaspoons hot olive or salad oil cook snap peas 12 teaspoon salt and 14 teaspoon black pepper stirring frequently until peas are tender-crisp about 4 minutes
Stir pepper mixture into snap peas in skillet
Spoon vegetables onto platter
If not serving right away cover and refrigerate to serve cold later