01 - Finely dice broccoli, carrots, and red bell pepper into uniform small pieces. Soften cream cheese at room temperature to facilitate smooth mixing.
02 - Combine softened cream cheese, mayonnaise, garlic powder, dried dill, salt, and ground black pepper in a medium bowl. Stir thoroughly until the mixture is smooth and well-blended.
03 - Microwave flour tortillas for 15 to 20 seconds until just pliable. Evenly spread the cream cheese filling over each tortilla. Distribute the diced vegetables, shredded cheddar cheese, and sliced green onions over the cream cheese base.
04 - Starting from one side, roll each tortilla tightly to enclose the filling. Use toothpicks to secure the seam. Transfer the rolled tortillas to the freezer for 20 minutes or refrigerate overnight if preparing in advance.
05 - Remove toothpicks, then cut each chilled roll into individual pinwheels. Arrange pinwheels attractively on a serving platter and serve immediately.