Fuente: Broccoli Byproducts Extraction With the increasing societal shift toward healthy eating and functional foods, the demand for fresh, ready-to-eat, and nutrient-dense microscale vegetables, such as microgreens and sprouted seeds, has risen significantly. Amaranthaceae microgreens have garnered significant attention in recent years due to their exceptional nutritional profile, vibrant coloration, and adaptability to diverse cultivation systems. As nutrient-dense functional foods, they are rich in essential vitamins, minerals, antioxidants, and bioactive compounds that offer numerous health benefits, including anti-inflammatory, anti-carcinogenic, and cardioprotective properties. Compared to mature vegetables, microgreens often exhibit higher concentrations of phytonutrients, making them ideal candidates for functional food applications. Their rapid growth cycle and suitability for soilless cultivation techniques, such as hydroponics and vertical farming, further enhance their appeal for sustainable agricultural practices and urban food production. This chapter provides a comprehensive review of the existing literature on Amaranthaceae microgreens, focusing on their nutritional composition, health benefits, production technologies, ecological significance, and potential as a functional food. Additionally, it highlights their role in mitigating climate change impacts through resource-efficient farming while supporting global food security initiatives. Given their increasing relevance in contemporary diets and agricultural systems, further research and innovation are imperative to unlock their full potential in both scientific and commercial domains. With their short growth cycle, minimal resource requirements, and low environmental impact, Amaranthaceae microgreens represent a sustainable and health-promoting food source with significant commercial and ecological benefits.