Activate the Yeast: Warm milk and water until lukewarm (not hot). Add yeast and honey (or maple syrup), then stir gently. Let the mixture sit for 5 minutes until it becomes bubbly.
Prepare the Dry Ingredients: In a large mixing bowl, combine rolled oats, whole wheat flour, bread flour, and salt. Mix well.
Mix Wet Ingredients: Add molasses, softened butter, and cooked oats to the yeast mixture. Stir thoroughly.
Form the Dough: Gradually add the wet mixture to the dry ingredients. Mix until a soft, pliable dough forms.
Knead the Dough: Knead the dough by hand or use a stand mixer fitted with a dough hook. Continue kneading for 8–10 minutes until the dough is smooth and elastic.
First Rise: Transfer the dough to a greased bowl. Cover with a damp cloth and let it rise in a warm spot for 1 to 1.5 hours, or until it doubles in size.
Shape the Dough: Punch down the dough gently to release air. Shape it into a loaf and place it on a greased baking sheet or in a greased loaf pan.
Second Rise: Cover the shaped dough and allow it to rise again for 30–40 minutes.
Bake: Preheat the oven to 375°F (190°C). Bake the bread for 40–50 minutes, or until the crust is golden brown and the loaf sounds hollow when tapped.
Cool and Serve: Let the bread cool completely on a wire rack before slicing and serving.