Disney says
Churro with Chocolate Chip Cookie and Cookies and Cream Sugar, with Cookies and Cream Dipping Sauce.
Friendliest.app says
The chocolate chip cookie and cookies and cream sugar give the churro and Oreo-like flavor. The dipping sauce is a vanilla icing with small cookie crumbles.

The churro is free of fish, shellfish, peanuts and tree nuts.

This churro contains gluten/wheat, milk, eggs and soy. No allergy information is provided for the dipping sauce.

Notes: All churro carts sell bottled beverages. If you are sensitive to any of the listed allergens, it is recommended that you purchase drinks from another location with less chance of cross contamination.

All Disney churros are purported to be produced by Tio Pepe's Churros, a
J & J Snack Foods brand.