Add grilled onions to any item.
Grilled beef with mushrooms and onions is a pan-Latin staple rooted in the Mexican parrilla tradition, where open-flame cooking of beef cuts like arrachera (skirt steak) and sirloin dates back to ranching culture in northern Mexico. Mushrooms, particularly cremini and oyster varieties, became a common accompaniment in urban fondas and casual steakhouses throughout central Mexico, where the combination echoes both indigenous appreciation for wild mushrooms and Spanish meat-forward cooking influences brought during the colonial era.