Place a pan over medium heat and let it warm up. Once heated, heat some olive oil then add the onion, bacon, mushrooms and apples, and sauté for 4 minutes.
As soon as they turn golden and the liquid begins to reduce, add the cranberries, sage, parsley, and chicken broth, stir with a wooden spoon, and simmer for 3-4 minutes.
Add the rusk to draw out the liquid, stir, and remove from the heat.
Place the turkey breasts on the kitchen counter, season them with salt and pepper, distribute the filling on their surface, then carefully roll them up.
Tie the breasts with string, oil them with a brush, transfer them to an oven tray, and bake in a preheated oven at 200°C/392 °F (fan) for 20 minutes and then at 160°C/320 °F (fan) for 15-20 minutes.
Once ready, serve the turkey breasts with potatoes, green beans or roasted vegetables.