Preheat your oven to 350 degrees Fahrenheit.
In an ovenproof skillet, heat a thin layer of oil over high heat.
Generously season both sides of the duck breasts with salt and pepper.
Once the skillet is hot, place the duck breasts skin-side down in the skillet.
Carefully flip the duck breasts over and let them cook for 3 more minutes.
Turn the duck back to skin-side up, then discard excess fat from the pan.
Transfer the skillet to your preheated oven and roast for an additional 10 to 15 minutes.
After removing the skillet from the oven, cover the duck with aluminum foil.
Meanwhile, in a separate small saucepan, combine the dried cranberries and tangerine juice.
Lower the heat and stir in the mascarpone cheese.
Using an immersion blender, puree the mascarpone and cranberry sauce until it’s silky smooth.
For an added depth of flavor, mix in a tablespoon of the reserved juices from the duck.
Return the sauce to the heat for a minute to warm through.
To plate, spread a generous amount of the sauce on the bottom of each plate and slice the duck breast.