01 -  Preheat the oven to 400°F (200°F). Pat the chicken thighs dry and season both sides evenly with salt and black pepper. 
 02 -  In a small bowl, combine cranberry sauce, Dijon mustard, and rosemary. Whisk until smooth and fully incorporated. 
 03 -  Arrange chicken thighs, skin side up, on a baking sheet. Brush each thigh generously with the prepared cranberry glaze. 
 04 -  Roast in the preheated oven for 35 to 40 minutes. Halfway through cooking, brush additional glaze over the chicken. Continue roasting until the skin is golden and an instant-read thermometer inserted into the thickest part registers 165°F (74°C).