The term BROWNIE INGREDIENT can be solved by two crossword solutions: COCOA (5 letters) and WALNUT (6 letters). COCOA is a powder made from the beans of the cacao tree, which is native to Central and South America. It is used in many desserts, including brownies, and is known for its rich, chocolatey flavor. Walnuts are a type of nut that grows on trees and is popularly used in baking. They are often added to brownies for a crunchy texture and nutty flavor.