An enriched dough, rolled around a filling of garlic, cheese, basil, and sun-dried tomato. Split and shaped into a figure-8, it becomes a stunningly attractive centerpiece bread. It's flavorful, colorful, and easy to make.
Pour the milk and the water into a 2-cup glass measure. Heat in the microwave until lukewarm. Combine the liquids with the flour, yeast, salt, egg, and olive oil, in the bowl of a stand mixer. With the dough hook, mix the ingredients to form a soft, smooth dough. Knead with the dough hook for about 5 minutes. The dough may be a little sticky. Transfer it to a lightly oiled, large bowl, cover with plastic wrap, and let rise until doubled in volume (45 to 60 minutes).
In the meantime, cut the sun-dried tomatoes into small pieces. Set aside with the other filling ingredients. When the dough has risen, deflate it and roll or stretch it out on a very lightly floured surface to an approximately 20x8-inch rectangle. Sprinkle the dough evenly with the cheese, chopped tomatoes, garlic, and fresh basil. From a long edge, roll the dough firmly into a log. Pinch the edges and ends firmly to seal. Place the log, seam-side down, on a parchment-lined baking sheet.
With kitchen shears and starting 1/2-inch from the end of the log, cut down the center of the dough to within 1/2-inch of the other end, cutting about 3/4-inch deep. Keeping the cut side up, twist the dough into an S-shape. Gently lift and tuck each end under the center of the S, pinching to seal, and forming a figure-8 shape. Cover loosely with plastic wrap and let rise another 45 to 60 minutes.
Toward the end of the rising time, preheat the oven to 350°F. When the bread has again doubled in size, remove the plastic wrap and place it in the oven. Bake for 35 to 40 minutes, tenting with foil after 20 minutes if it is browning too quickly. When the bread is done (you can check the internal temperature with an instant read thermometer; it should be 190° to 200° F), transfer it to a rack to cool. Serve slightly warm or at room temperature. The loaf will keep, well-wrapped for 2 to 3 days.