Heat the oven to 190°C (375°F). Warm half the olive oil in a small pan over medium heat, add the garlic and spinach, and cook for 2 minutes until wilted. Tip into a bowl and leave to cool for 5 minutes.
Stir the goat cheese, dried cranberries and lemon zest into the spinach until evenly mixed. Season with a little salt and pepper.
Butterfly each chicken breast: slice horizontally almost all the way through, then open it flat like a book. Season both sides with salt, pepper, thyme and paprika.
Spoon a quarter of the filling onto one half of each breast, fold the other half over, and secure the edges with toothpicks or kitchen twine. Do not overstuff — a little filling escaping is fine, a burst breast is not.
Heat the remaining olive oil in a large ovenproof skillet over medium-high heat. Sear the stuffed breasts for 3 minutes per side, until golden.
Transfer the skillet to the oven and bake for 20–25 minutes, until an instant-read thermometer reads 74°C (165°F) in the thickest part.
Rest the chicken for 5 minutes, pull out the toothpicks, and slice on the diagonal so the filling shows.
Notes
Do not overstuff the breasts. Rest 5 minutes before slicing so the filling sets. Keeps 3 days refrigerated.
Keyword cranberry, high protein, spinach, stuffed chicken breast, thanksgiving dinner