1. Preheat oven to 400 degrees. Place turkey, skinned side up, on a work surface. Hold a sharp knife parallel to the cutting surface, and starting on the thicker side, cut the turkey almost completely in half without cutting all the way through; open like a book. With a meat mallet or small heavy skillet, pound turkey to a 1/2-inch thickness.

2. Spread stuffing on turkey breast, leaving a 1/2-inch border all around. Starting at a long end, roll turkey over stuffing; pat and tuck turkey to form a uniform log.

3. Place turkey roulade, seam side down, on a rimmed baking sheet. Lay bacon crosswise over turkey, overlapping slices slightly. Using kitchen shears, trim ends of bacon so slices extend 1/2 inch beyond roulade on each side; tuck ends under. Roast, until an instant-read thermometer inserted in thickest part registers 165 degrees, 45 minutes to 1 hour. Let rest 15 minutes; slice and serve, garnished with thyme, if desired.