Polyethylene and propylene are two of the most abundant polymers in wastes. Their separation in common waste recovery operations is very difficult and a complete separation is sometimes not possible. This is the reason why polymer waste recovery is providing an increasing motivation for improving PE/PP properties as a blend. In this work, microstructure and fracture performance of blends of commercial polypropylene (PP) and linear low density polyethylene (LLDPE) is reported. Blends were prepared in a twin screw extruder, and then processed via injection molding into double-gated plaques that induced weld lines. The morphology of melt-crystallized polymers is known to be related to the fabrication technique. Then, microstructure and morphology of blends were analyzed by differential scanning calorimetry (DSC), X-ray diffraction (XRD) and polarized optical microscopy (POM) after each processing step, i.e. extrusion and injection molding. The aim was to evaluate the influence of processing in microstructure and morphology, based in the knowledge that they will influence final parts performance. Fracture tests were carried out on mode I double edge-notched tensile specimens at quasi-static conditions. Different Fracture Mechanics approaches were applied depending on the materials´ fracture behavior. The Essential Work of Fracture methodology was adopted for blends that exhibited ductile fracture behavior, whereas the stress intensity factor (K1c) was chosen to characterize the resistance to unstable fracture. It was also observed that fracture behavior was dependent on the type of blend and the location of the specimen in the injected piece, and the loading direction. Moreover, impact tensile tests were performed in dog-bone samples. Several behaviors were found, ranging from ductile with plastic deformation prior to rupture, to completely brittle.