Preheat your oven to 400ºF. This is crucial for achieving a golden crust. While your oven heats, grab your medium (12-inch) skillet and spread the softened butter along the inside. It will create a non-stick surface and add flavor to the quiche.
In a mixing bowl, stir together the self-rising flour and heavy cream until just combined. You want a smooth dough that’s easy to work with. Press this mixture into the bottom of the skillet and up the sides, about 2 inches high. This crust will cradle all the delicious filling.
Next, heat another medium skillet over medium heat. Crumble and brown the breakfast sausage for about 5 minutes. You want it cooked through and nicely browned for added flavor. Once done, remove it from the heat and use a slotted spoon to transfer the sausage onto the biscuit dough.
Top the sausage layer evenly with the grated Cheddar cheese. This will melt beautifully during baking and create a delicious cheesy layer.
In another bowl, whisk together the eggs, milk, kosher salt, and ground black pepper. Pour this mixture directly over the cheese and sausage. Make sure it's evenly distributed so every bite is packed with flavor.
Carefully place the skillet into the preheated oven. Bake for about 20 minutes, or until the eggs are set, and the quiche is golden brown on top. Keep an eye on it to prevent over-browning.
Remove the skillet from the oven and let the quiche cool for a few minutes. This resting time helps the filling set, making it easier to slice.
Once slightly cooled, slice into wedges and serve warm. Enjoy the rich flavors of the Southern Sausage Cheddar Quiche on its own or with a fresh salad.
Store any leftovers in the refrigerator; they taste great reheated or even cold!