A method for manufacturing a rotor blade, including: a) arranging a first layup of fiber material inside a mold, the first layup corresponding to an airfoil of the rotor blade, b) arranging a second layup of fiber material on a core member before and/or after arranging the core member in the mold, the second layup including the core member corresponding to a web of the rotor blade, the core member comprising a recess configured to ensure a smooth transfer of loads into and out of the web, and c) curing a resin impregnating the fiber material of the first and second layup to form the rotor blade.