Proteins are essential nutrients for the human body. All food made from meat, poultry, seafood, beans and peas, eggs, processed soy products, nuts and seeds are considered part of the protein group. The main challenge is ensuring global access to healthy diets from sustainable food systems. The EU-funded SMART PROTEIN project is addressing this issue through future-proofed protein supply chains with a positive impact on the bio-economy, environment, biodiversity, food and nutrition security and consumer trust. It is validating and demonstrating innovative, cost-effective and resource-efficient plant protein products from fava bean, lentil, chickpea and quinoa. Microbial biomass proteins will be created from edible fungi by upcycling side streams from pasta (pasta residues), bread (bread crust) and beer (spent yeast and malting rootlets) industries.