While the biscuits bake, prepare the gravy.
In a large saucepan or Dutch oven, cook while crumbling the sausage over medium-high heat. Once browned, sprinkle with flour and cook for 2 minutes.
Reduce heat to low and stir in the milk while stirring constantly. Stir in the beef bouillon/base and all of the seasonings.
Bring to a simmer, stirring often until it thickens, 5-10 minutes. If it gets too thick, stir in additional milk ¼ cup at a time as needed. If it's not thick enough, continue to simmer. Taste and season with additional salt and pepper and/or red pepper flakes as desired.
Ladle gravy over biscuits and dig in!
