1. In a large Dutch oven, over medium heat, sauté the leeks in olive oil until tender and the white sections are transparent. Add carrots and celery. Cook until slightly soft.
2. Add turkey, ham, stock, Flabby Phoenix rub and Worcestershire sauce. Simmer for about 10 minutes, stirring regularly.
3. In a separate medium sized pot, add cream, stir for 2 minutes to warm, before slowly adding the flour. Stir continually to combine and whisk out any lumps which form. When thickened, add the thyme and bacon crumbles.
4. Mix the cream mixture into the Dutch oven and fold to combine. Cool the filling completely in the fridge.
5. Prepare your croissant dough. I typically use Pillsbury brand because that's what my supermarket carries, but whatever your favorite is, will work well. Use two triangles and press them together slightly to form one large rectangle piece. Roll flat and then cut in half to make two squares.
6. Press squares into greased, disposable muffin pan. Fill the croissant cups with the turkey and ham filling and top with a couple of tablespoons of the Mozerella.
7. Smoke uncovered at 325-350 F for about 20 minutes, or until the pastry has begun to rise, shows a golden brown color and the cheese is melted and golden.