Place the ½ cup of rolled oats in a small heatproof bowl. Pour the ½ cup of boiling water over them and stir to combine. Let the oats soak for approximately 15 to 20 minutes, until they have absorbed most of the water and softened. Then allow the mixture to cool until lukewarm before adding it to the dough. This cooling step is important, because adding very hot oats to the yeast mixture could harm the yeast.

Step 2: Mix the Wet Ingredients

In a large mixing bowl, combine the warm milk, honey, instant yeast, and melted butter. Stir until the honey is mostly dissolved. Add the cooled oat mixture and stir again so the oats are evenly distributed.

Step 3: Make the Dough

Add the bread flour and salt to the bowl. Mix with a sturdy spoon or spatula until all the flour is incorporated and a rough, sticky dough forms. The dough should look soft and slightly shaggy rather than smooth. There is no kneading required. Cover the bowl with a clean kitchen towel or plastic wrap.

Step 4: Let the Dough Rise

Set the covered bowl in a warm, draft-free spot and let the dough rise for approximately 1 to 1½ hours, or until it has nearly doubled in size. It should look airy and noticeably puffy. Rise times depend on your kitchen temperature, so rely on how the dough looks rather than the clock alone.

Step 5: Shape the Loaf

Lightly grease a 9 × 5-inch loaf pan. Transfer the risen dough to a lightly floured surface and gently shape it into a loaf. Avoid working or pressing the dough too much, since you want to preserve the air bubbles that formed during the rise. Place the dough seam-side down into the prepared pan, and gently spread it toward the corners so it sits evenly.

Step 6: Complete the Second Rise

Cover the loaf pan loosely and let the dough rise for another 35 to 60 minutes, until it is puffy and rises just above the rim of the pan. While it rises, preheat your oven to 350°F (175°C).

Step 7: Add the Oat Topping

Lightly brush the surface of the risen loaf with milk or water. Sprinkle the remaining tablespoon of rolled oats evenly over the top, gently pressing them in so they adhere. This simple step gives the finished loaf its rustic, bakery-style look.

Step 8: Bake Until Golden

Place the loaf in the preheated oven and bake for 35 to 40 minutes, until the top is golden brown and the bread is fully baked. If the top begins browning too quickly, loosely cover it with aluminum foil during the final part of baking. For the most reliable result, use an instant-read thermometer: the center of the loaf should reach approximately 190°F to 200°F (88°C to 93°C).

Step 9: Cool and Slice

Remove the bread from the oven and let it rest in the pan for about 10 minutes. Carefully transfer it to a wire rack and allow it to cool completely before slicing. It is tempting to cut into a warm loaf, but cooling lets the crumb set, which keeps the slices soft and neat instead of gummy.