McDonalds Sausage Biscuit (n' gravy) Transformation. Love biscuits and gravy? Short on time but still want your fix. Check this out.... Simple yet great white gravy: 1 1/2 T butter 1 1/2 T flour 1-1 1/2 cups whole milk 1/2 tsp chicken granules 1/4 tsp salt 1/4 tsp black pepper Make your rue. Add milk and bring to boil. Reduce and add granules, salt and pepper. Nuke sausage biscuits for 15 seconds and assemble. This would cost $11 at Denny's after tax and tip. I did for $2.50.