Remove sausage from casings + discard casings; heat 1 tsp oil in skillet over high; add sausage to pan, break into large chunks + sear undisturbed 2 min; flip meat over, then break into small pieces; cook 2-3 min until fully cooked + no pinkness remains; set aside

Meanwhile, pour contents of sweet potato mash into a microwave-safe dish + cover with a plate; cook on high 1-2 min until hot + stir until smooth

Heat 1 tbsp oil in skillet over med-high + cook veggie mix with salt/pep 3-5 min until tender

Divide mash + veggies to bowls; top with sausage + dollop on 1-2 tbsp sour cream