Filler-reinforced solid resin multilayered structures and methods of making the same. A method of forming a filler-reinforced solid resin multilayered structure includes forming a layer stack including a first resin layer that is a monoextruded filler-reinforced resin layer and one or more second resin layers that are the same as or different than the first resin layer. The monoextruded filler-reinforced resin layer has a thickness of about 1 micron to less than about 1 mm. The method includes contacting the layer stack and a compression tool. The method includes compressing the layer stack with the compression tool, to laminate the layers of the layer stack and form the filler-reinforced solid resin multilayered structure.