Calabaza is a type of pumpkin-like squash that is round in shape and varies in size. It can be as large as a watermelon or as small as a cantaloupe. The color of calabaza can also vary and may include greens, tans, reds and oranges. Some squash are all one color while other calabaza are multi-colored and may include all of colors listed above. This squash is popular in the Caribbean as well as Central and South America. It is also commonly called a West Indian Pumpkin. Hubbard and butternut squash are similar in flavor and make the best substitutes.