Mix the spread: In a bowl, stir the cream cheese, mayonnaise (or yogurt), mustard, herbs, and a pinch of salt and pepper until smooth.
Prep the tortillas: Lay one tortilla on a clean surface. If it’s stiff, warm it 10 seconds in the microwave so it’s flexible and won’t crack.
Spread evenly: Using a spatula, spread a thin, even layer of the cream cheese mixture over the entire tortilla, right to the edges. This “glue” keeps the pinwheels rolled and sealed.
Add the turkey: Layer slices of turkey evenly, leaving a 1-inch border on one edge for sealing.
Add the cheese: Place cheese slices on top of the turkey, slightly overlapping.
Add veggies: Scatter spinach, thin bell pepper strips, and cucumber in a light, single layer. Don’t overfill—too much bulk makes rolling difficult.
Roll tightly: Starting from the edge opposite the 1-inch border, roll up the tortilla snugly, pushing back any filling that shifts.
Finish with the clean border so it seals.
Chill for clean cuts: Wrap the roll in plastic wrap and refrigerate for 20–30 minutes. This helps the pinwheels slice neatly.
Slice: Unwrap and use a sharp serrated knife to trim the ends. Slice into 1-inch pieces.
Wipe the knife between cuts for sharp edges.
Serve: Arrange on a platter. If you like, add a small bowl of ranch, honey mustard, or a light vinaigrette for dipping.