1. The most common way:
* Sign "cake" (a handshape like a slice of cake with the index finger pointing upwards) and then add the sign for "fruit" (a flat hand, palm down, moving back and forth across the palm of the other hand). This represents the idea of a fruit-filled pastry.
2. Using fingerspelling:
* You can fingerspell "PIE".
3. Describing the pie:
* You can sign the type of pie, such as "apple pie" or "cherry pie" by combining the signs for the fruit and "pie" (as described above).
Ultimately, the best way to sign "pie" depends on the context and the person you're communicating with.