Heat oven to 350°F. Spray 9 1/2-inch glass deep-dish pie plate with cooking spray. In medium bowl, place Bisquick mix; cut in butter, using pastry blender or fork, until crumbly. Add boiling water; stir vigorously until soft dough forms. Using fingers dipped in Bisquick mix, press dough on bottom and up side of pie plate, forming edge on rim of plate. Sprinkle 1/2 cup of the cheese over bottom of crust. Arrange asparagus in even layer over cheese; top with roasted peppers and oregano. In 12-inch skillet, heat oil over medium-high heat. Add zucchini and yellow squash; cook 2 minutes or just until tender. Layer over mixture in pie plate, overlapping slightly.