Queso

Heat 2 Tbsp. unsalted butter in a medium saucepan over medium until foamy, about 1 minute. Reduce heat to medium-low and add onions. Using a Microplane, finely grate garlic into pot; season with 1 tsp. salt. Cook, stirring occasionally, until onions are tender but haven’t developed any color, about 3 minutes. Add 2 tsp. ground cumin and ½ tsp. cayenne pepper and cook, stirring frequently, until aromatic, about 30 seconds. Stir in 1¾ cups milk and bring to a bare simmer.