Trim panel including a decoration layer having a decoration side provided with a decoration, a contact layer having a contact side structured and arranged for contact with a substrate, and an intermediate layer having a cell structure and being at least one of: connected one of indirectly or directly to the decoration layer and connected one of indirectly or directly to the contact layer. A connecting layer is produced from a wood material and formed in one piece with at least one connecting element formed on at least two opposing sides of the connector layer in the form of complementary tongue and groove connectors. Intermediate layer is one of: arranged on a side of connecting layer facing towards decoration layer or on a side of connecting layer facing towards contact layer, and is exposed on edges of trim panel running orthogonally to panel plane.