Cook and crumble the sausage in a large nonstick pan. Sprinkle flour on top. Cook and stir for 1 minute.
Gradually whisk in milk. Add salt and pepper and bring to a simmer. Cook, stirring frequently, for about 3 minutes, remove from heat.
Preheat oven to 375 degrees. Lightly grease a 10-inch cast iron pan.
Cut each biscuit into four pieces. Shape each piece into a ball and place around the edge of the pan so that they are touching. Spoon gravy into the middle.
Bake for 20 to 25 minutes or until biscuits are browned.