Kraft is using its cream cheese shortage as a marketing opportunity.

For just a few days this holiday season, a limited number of people will be able to spend $20 on dessert and charge it to Kraft, owner of Philadelphia Cream Cheese. The premise: People who can’t bake cheesecakes because they can’t find cream cheese can get another baked good on Kraft’s dime.

Here’s how it works: People interested in the offer can visit a special website set up by Kraft. On December 17 and 18, up to 18,000 of them will be able to nab the right to get reimbursement for a holiday treat. They’ll be able to submit receipts to the company a few weeks later.