(See also: How Cash Rewards Credit Cards Really Work)My family is a perfect example of how you can use credit cards to receive cash back. Just one word of caution — cash back credit cards should only be used by people who can pay their credit card balances in full and on time. The Top Credit Cards Featuring Cash Back RewardsOnce you have decided to earn credit card rewards in the form of cash back, you should definitely consider my favorite cash back rewards credit cards. Blue Cash Preferred® Card from American ExpressThe Blue Cash Preferred® Card from American Express offers the highest cash back you can get for groceries. American Express Cash Magnet® CardThe American Express Cash Magnet® Card offers unlimited 1.5% cash back on your purchases.