Mix Bisquick, milk and sage until soft dough forms.
Turn onto surface generously sprinkled with Bisquick. Knead 10 times. (To make drop biscuits, do not knead dough. Just drop by the spoonful.)
Roll out to 1/2-inch thick and cut with a 2 1/2-inch cutter (or the top of a glass cup). Place on an ungreased cookie sheet and bake in a preheated oven at 450 degrees for 8 to 10 minutes or until golden brown.
As biscuits bake, cook the sausage in a large frying pan on medium heat. (If you’re using links, remove from casing and crumble or slice to make it easier.) Remove meat and set aside when completely cooked.
Slowly mix in half and half (or milk) and whisk until thickens, about 5 minutes. Add salt and pepper, followed by cooked sausage meat. Turn heat to low, and allow to continue cooking another couple of minutes.