The ornamental design for a multi-functional vegetable processor, as shown and described.
FIG. 1 is a perspective view of a multi-functional vegetable processor according to our new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines showing of a multi-functional vegetable processor are for the purpose of illustrating environmental structures of the multi-functional vegetable processor and form no part of the claimed design.