1.Heat oven to 350°F
2.Cook and stir bacon in large skillet on medium heat until crisp. Remove from skillet, reserving 2 Tbsp. drippings in skillet. Drain bacon on paper towels. Meanwhile, cook and stir hash browns and vegetables in drippings 10 min.
3.Spread vegetable mixture onto bottom of 13x9-inch baking dish sprayed with nonstick cooking spray. Whisk eggs and sour cream until blended; pour over vegetable mixture. Top with bacon and Velveeta®.
4.Bake 40 min. or until center is set and casserole is heated through.