In Multipurpose Pot, set over high heat, boil macaroni until tender, about 6–7 min.
Meanwhile, dice pepper. Add to boiling water for the last 1 min of cooking.
Place turkey in Multipurpose Steamer. Cover; microwave on high 4 min. Using Ground Meat Separator, break up chunks halfway through cooking.
Meanwhile, cut cherry tomatoes in half.
Carefully drain noodles and pepper, set aside. In the same pot, whisk mix with milk. Whisking constantly, bring to a boil over medium-high. Reduce heat; simmer whisking often, for 3 min or until thickened. Remove from heat and stir in grated cheese.
Return noodles and bell pepper to the pot with queso sauce. Add cooked turkey; stir until evenly mixed. Spoon into bowls and top with cherry tomatoes, and additional toppings, if desired.