Heat oil in a large nonstick skillet over medium heat. Add sausage to pan; cook 5 to 7 minutes or until browned and cooked through, stirring to crumble. Add vegetables to pan; cook 3 to 4 minutes or until tender.
Add shrimp and Creole seasoning to sausage mixture in pan; cook 2 to 3 minutes, stirring occasionally. Stir in quinoa; cook 1 to 2 minutes or until shrimp are done and quinoa is thoroughly heated.