1Mix tomatoes and water; let stand 10 minutes. Drain thoroughly and chop.
2Heat chopped tomatoes and remaining ingredients except crackers in 2-quart saucepan over medium-low heat, stirring frequently, until cream cheese is melted.
3Spray inside of 1 1/2-quart slow cooker with cooking spray. Transfer tomato mixture to slow cooker. Serve dip with crackers. Dip will hold on Low heat setting up to 2 hours. Scrape down side of cooker with rubber spatula occasionally to help prevent edge of dip from scorching.