Warm the liquid base: In a small saucepan or microwave-safe bowl, warm 1 cup milk and 1/3 cup water until gently warm to the touch (about 105–115°F). Stir in 3 tablespoons honey and 2 tablespoons butter until melted. If it gets too hot, let it cool—too much heat can kill the yeast.

Bloom the yeast: In a large mixing bowl, add 2 1/4 teaspoons active dry yeast. Pour the warm milk mixture over it and let sit 5–10 minutes until foamy. If using instant yeast, you can skip blooming and mix it directly with the dry ingredients, but make sure your liquids are still warm, not hot.

Combine dry ingredients: In a separate bowl, mix 3 cups all-purpose flour, 1 cup rolled oats, and 1 1/2 teaspoons salt. This evenly distributes the salt and oats.

Bring the dough together: Add the dry mix to the liquid and stir with a sturdy spoon until a shaggy dough forms. If it’s very sticky, add 1–3 tablespoons more flour, a little at a time. Aim for soft and slightly tacky, not dry.

Knead: Turn the dough onto a lightly floured surface and knead for 8–10 minutes, until smooth and elastic. The dough should spring back when pressed. You can also use a stand mixer with a dough hook on medium-low for 6–8 minutes.

First rise: Place the dough in a lightly greased bowl, cover with a clean towel or plastic wrap, and let rise in a warm place until doubled, about 60–90 minutes. If your kitchen is cool, it may take a bit longer.

Shape the loaf: Gently deflate the dough and pat it into a rectangle. Roll it up tightly from the short end, pinching the seam. Tuck the ends under and place the loaf seam-side down into a greased 9x5-inch loaf pan.

Second rise: Cover and let rise until the dough domes slightly over the rim of the pan, about 45–60 minutes. It should look puffy and airy when gently pressed.

Optional topping: For a bakery-style look, brush the top with a little milk or a beaten egg and sprinkle rolled oats over the surface.

Bake: Preheat the oven to 350°F (175°C). Bake for 30–35 minutes, until the top is golden brown and the loaf sounds hollow when tapped. An instant-read thermometer should read about 190–195°F in the center.

Cool: Let the loaf cool in the pan for 10 minutes, then transfer to a wire rack. Brush the warm top with a teaspoon of honey mixed with a teaspoon of warm water for a soft, shiny finish. Cool at least 45 minutes before slicing to keep the crumb tender.