Will these donuts pay dividends? Krispy Kreme and McDonald's cook up a tempting partnership. Here's what you need to know.Shares of Krispy Kreme (DNUT -2.32%) rose 18% in March 2024, according to data from S&P Global Market Intelligence. The gains were baked on the fires of a game-changing collaboration with another food-service veteran -- mighty McDonald's (MCD -1.89%).Sweetening the deal from Kentucky to the whole countryIn a joint press release, Krispy Kreme and McDonald's announced the expansion of a sm ...