Step 1

Heat oven to 325°F. Spray rack in roasting pan with cooking spray.

Step 2

In small bowl, stir together spinach, cream cheese, onions, basil, garlic, tarragon and red pepper.

Step 3

Cut pork lengthwise, cutting to but not through other side. Open cut piece; pound to 1/2-inch thickness. Sprinkle pork with salt and pepper. Spoon spinach mixture evenly over pork. Beginning with long side, roll up; tie securely with heavy kitchen string at 2-inch intervals. Place pork on rack in pan. Insert ovenproof meat thermometer so tip is in thickest part of pork and does not rest in stuffing.

Step 4

Bake uncovered 1 hour. Increase oven temperature to 375°F. Bake 10 to 25 minutes longer or until browned and thermometer reads 145°F. Cover loosely with foil; let stand at least 3 minutes. Remove string before slicing.