Mix sour cream and Seasoning Mix in small bowl until well blended. Reserve 1 cup mixture; set aside.
Spread about 1/4 cup refried beans evenly over each tortilla. Spread 2 tablespoons of the remaining sour cream mixture over top of beans. Divide remaining ingredients evenly among tortillas, sprinkling evenly in layers.
Roll tortillas tightly and place seam side down on cutting board. Using a serrated knife, trim about 1 inch from ends of each roll-up. Cut each roll-up into 6 pieces, about 1 1/4-inches each. Serve pinwheels with reserved sour cream mixture for dipping.
Test Kitchen Tip: Serve pinwheels on platter with toothpicks. Prepare tortillas and roll as directed, securing each with 6 toothpicks; about 1 1/4-inch apart. Trim roll-ups as directed and cut between toothpicks into 6 pieces.