Prepare biscuits according to package instructions or your preferred recipe.
As soon as you put the biscuits in the oven, begin preparing the gravy. Heat a large sauté pan or skillet over medium-high heat. Once hot, add the chorizo. Use a spatula to break it apart, then add the onions, and cook for 7 minutes until the chorizo begins to brown.
Stir in the flour and cook for another minute, stirring occasionally.
Reduce heat to medium-low. Add the milk and simmer for 5-7minutes, stirring often, until thickened.
Ladle the chorizo gravy over biscuits, add salt and pepper to taste, and serve warm.
