Step 1: In a small bowl, combine the warm water, honey, and yeast. Let it sit for 5-10 minutes until the mixture becomes foamy and active.
Step 2: In a small skillet, melt the butter over medium heat. Add the chopped sage and cook for 1-2 minutes until fragrant. Remove from heat and let cool slightly.
Step 3: In a large mixing bowl or the bowl of a stand mixer, combine the pumpkin puree, the sage-butter mixture, and the activated yeast mixture. Stir until well combined.
Step 4: Gradually add the bread flour and salt. If using a stand mixer, use the dough hook and knead on low speed for 5-7 minutes. If mixing by hand, turn the dough onto a floured surface and knead for 10 minutes until smooth and elastic.
Step 5: Place the dough in a lightly greased bowl, cover with a damp cloth, and let rise in a warm place for 60-90 minutes, or until it has doubled in size.
Step 6: Gently punch down the dough and shape it into a loaf. Place it into a greased 9x5 inch loaf pan. Cover and let rise again for 30-45 minutes.
Step 7: Preheat your oven to 375°F (190°C). Brush the top of the loaf with the beaten egg and press the whole sage leaves gently onto the surface for decoration.
Step 8: Bake for 30-35 minutes, or until the loaf is golden brown and sounds hollow when tapped on the bottom. Let it cool in the pan for 10 minutes before transferring to a wire rack to cool completely.