Cheesy Broccoli Rice Casserole

Ingredients

• 1 tablespoon butter
• 1 small onion, chopped
• 1/2 cup chopped celery
• 3 cups frozen chopped broccoli, thawed
• 1 jar (8 ounces) cheese dip
• 1 can (10-1/2 ounces) condensed cream of mushroom soup, undiluted
• 1 can (5 ounces) evaporated milk
• 3 cups cooked rice