Heat oil in a large nonstick skillet over medium-high heat. Add sausage; cook 3 minutes or until browned, stirring to crumble. Remove from heat; cool slightly. Crumble sausage into 1/2-inch pieces; return to pan.
Lightly spoon flour into a dry measuring cup; level with a knife. Combine flour and 1% low-fat milk, stirring with a whisk until smooth. Add milk mixture, salt, and freshly ground black pepper to pan; bring to a boil over medium-high heat. Cover, reduce heat, and simmer for 3 minutes or until thick. Split the biscuits in half. Place 2 biscuit halves on each of 8 plates; top each serving with about 1/3 cup gravy. Serve immediately.