In a 12-inch cast-iron skillet, heat oil over medium-high heat. Add sausage; cook, using the back of a spoon to break up meat, until browned, about 6 minutes. Stir in flour; cook for 1 minute, stirring constantly. Gradually whisk in milk, thyme, salt, and pepper until smooth. Remove from heat. Arrange Buttermilk Biscuit Dough rounds in an even layer on top of gravy.
In a small bowl, whisk together egg and 1 teaspoon water. Brush egg wash onto dough.
Bake until biscuits are golden brown and gravy is bubbly, 20 to 22 minutes. Let stand for 5 minutes. Garnish with thyme, if desired.
Buttermilk Biscuit Dough
Line a baking sheet with parchment paper.
In a large bowl, place flour. Using a pastry blender, cut in cold butter until mixture is crumbly. Add cold buttermilk, stirring with a fork just until combined.
Turn out dough onto a heavily floured surface, and knead several times until dough comes together. Pat or roll dough to ¾-inch thickness. Using a 2-inch round cutter dipped in flour, cut dough without twisting cutter, reroll scraps as necessary. Place 2 inches apart on prepared pan. Freeze for at least 15 minutes or while making gravy. Biscuits can be stored, frozen, for up to 3 months. (Freeze cut biscuits for 24 hours, and transfer to a heavy-duty resealable freezer bag.)
Notes
*We used White Lily Unbleached Self-Rising Flour.
KITCHEN TIP: Want buttermilk biscuits without the gravy? Place frozen biscuits on a parchment-lined baking sheet, brush with egg wash, and bake at 425 degrees for 15 to 18 minutes.
Recipe by Taste of the South at https://tasteofthesouthmagazine.com/biscuits-sausage-gravy-cobbler/