This sweet and highly nutritious artisan loaf is incredibly rich, packed with crunchy toasted walnuts, and naturally sweetened with plump raisins. Swirled with a thick cinnamon-sugar ribbon, it features a beautifully balanced sweetness and makes the absolute best French toast you will ever taste.
Day 1 – Active Starter Ignition & Main Dough Kneading
10:00 PM: In a clean glass jar, dissolve your 10g of starter culture into 50g of water. Stir in the 45g of flour and 5g of rye flour. Mix well, cover loosely, and let sit at room temp 74–78°F (23–26°C) for 8 to 10 hours until it triples in volume.
8:00 AM (Next Morning): In your stand mixer bowl, mix the 240g of water with 20g of sugar. Add 100g of your active overnight starter, 200g of bread flour, and 200g of whole wheat flour.
Run the machine on low speed for 2 to 3 minutes (or on a KitchenAid mixer on speed 3 for 5 to 6 minutes) until the gluten network tightens. Add the 8g of salt, knead for 2 more minutes, then drop in the 20g of soft butter. Knead for 3 to 5 minutes until the dough wraps smoothly around the hook.
Dump in the 120g of chopped walnuts and 80g of raisins, mixing for 2 additional minutes until the inclusions are fully incorporated.
8:30 AM: Round the dough into a ball and let it proof for 3 to 4 hours at 76–80°F (24–28°C). Perform 2 separate rounds of structural stretch-and-folds every 2 hours; it will look notably light and puffy.
12:00 PM: Cover the container tightly and move it to the refrigerator for a cold bulk fermentation rest lasting 9 to 12 hours.
9:00 PM – Geometric Filling & Log Rolling: Mix the 60g of sugar and 20g of cinnamon together in a cup. Pull the cold dough from the fridge and roll it out with a rolling pin into a neat 9×17 inch rectangle.
Spray the surface of the dough lightly with a water bottle mist, then spread your cinnamon-sugar filling evenly all over the sheet, leaving a clean 1-inch border along the edges. Generously spray the cinnamon filling layer with water a second time to hydrate the sugars.
Starting with the short side, roll the dough up tightly into a dense log and pinch the bottom seam together firmly. Transfer the log seam-side down onto a baking tray lined with parchment paper. Cover loosely and let proof on your counter overnight for 8 to 10 hours at 68–70°F (20–21°C) until it completely doubles in size.
Day 2 – Air Hole Poking & Staged High-Heat Baking
10. Preheat your oven thoroughly to 480°F (250°C) with your oval cast iron pan or baking stone inside for 30 to 40 minutes.
11. The Air-Pocket Escape: Once the loaf is fully proofed, use a sharp wooden stick or skewer to poke deep holes alongside the base of the loaf (4 times on each side) to prevent gaping gaps. Using a sharp scoring knife or lame, make 4 diagonal slashes across the top surface.
12. Slide the loaf into your hot cast iron pan, drop the lid on to trap the steam, and bake at 480°F (250°C) for exactly 10 minutes.
13. Remove the lid carefully, lower the oven temperature to 365°F (185°C), and continue baking for 30 minutes without the lid.
14. Pull the tray out briefly, spray the hot crust lightly with a fine mist of water, and sprinkle a heavy layer of coarse sugar across the top. Return to the oven for a final 15 to 20 minutes until the bread turns a gorgeous, glossy dark brown. Let cool completely on a wire rack before slicing.
Why Double Water Spraying is Mandatory: When filling a sweet swirl bread, home bakers often deal with the top crust separating from the filling, creating a giant hollow tunnel inside the loaf. Misting the dough with water before and after adding the cinnamon-sugar mixture melts the granular sugars slightly into a sticky paste. This locks the dough layers together during rolling, ensuring a tight swirl.
The Genius Behind the Skewer Holes: Poking deep holes along the bottom flanks of your shaped loaf using a sharp stick right before it hits the oven serves a specific physical purpose. Cinnamon naturally disrupts gluten bonds and creates steam pockets as it heats. Giving that trapped steam a set of open escape tunnels prevents the bread from blowing apart at the seams.
Transitioning to a Morning Proof Timeline: If your evening schedule makes step 7 difficult, you can safely let the dough rest in the refrigerator completely overnight. The next morning, simply pull the cold dough out, perform your rolling, water-spraying, and cinnamon-filling assembly, and allow the shaped log to proof at a warm room temperature of 76–80°F (24–28°C) for 4 to 6 hours before baking.
Flour Customization Guidelines: This master formula blends equal 50% weights of strong bread flour and rustic whole wheat flour to secure an incredibly rich, nutty profile. If stone-ground whole grains are unavailable in your local area, you can substitute them dynamic-for-dynamic with any standard whole wheat flour without needing to recalibrate the baseline 60% hydration level.