For the gravy: Heat the oil in a large skillet to medium high heat. Once heated, add the flour, slowly, while continuously whisking. Continue to whisk until completely blended. No lumps.
Slowly add 2 cups of the milk to the base (oil and flour). Whisk until well blended. **I took a picture of it at it’s thickest so you could see how thick it will be at this point.
Add 2-3 cups of milk, salt, seasoned salt and pepper. Stir well, no lumps. You will want a smooth consistency. Bring to a slight boil and then turn your heat down to low or simmer. **You can add more milk if it’s not your desired thin/thickness.
Preheat oven to 350°.
With one can only, cut each biscuit into 4 quarters. Place in the bottom of a sprayed 3 quart casserole dish.
Heat up your sausage in the microwave for about 2-3 minutes, turning in between. Cut into small bite size pieces. Place half of these on top of the biscuits in the casserole dish.
Turn the gravy off and pour all of the gravy on top of the sausage.
Add the other half of the sausage on top of the gravy.
Cut the other can of biscuits into quarters like the first one. Layer them on top of everthing.
Place casserole dish on a baking sheet and place in your preheated oven for 40 minutes. **The baking sheet keeps the bottom layer of biscuits from burning or becoming too done. Let cool about 15-20 minutes before serving.