01 - Grease a standard 9x5-inch loaf pan with melted butter or nonstick spray.
02 - In a large mixing bowl, whisk together the flour, fine sea salt, ground cinnamon, ground nutmeg, ground cloves, and instant yeast.
03 - In a separate mixing bowl, whisk together the pumpkin purée, pure maple syrup, lukewarm water, melted unsalted butter, and vanilla extract.
04 - Pour the wet ingredients into the dry ingredients. Mix with a sturdy spoon or spatula until just combined, achieving a thick and sticky consistency without dry patches.
05 - Cover the bowl with plastic wrap or a clean kitchen towel. Allow the dough to rise at room temperature for 2–3 hours, or until it has doubled in size and appears bubbly.
06 - Gently transfer the risen dough into the prepared loaf pan. Smooth the surface with a spatula. If using, sprinkle the top with rolled oats and pumpkin seeds.
07 - Loosely cover the pan and let the dough rise for an additional 30–45 minutes, until it is just above the rim of the pan. Meanwhile, preheat your oven to 350°F (175°C).
08 - Bake for 45–50 minutes, or until the bread is golden brown and a toothpick inserted into the center emerges clean.
09 - Allow the bread to cool in the loaf pan for 10 minutes before carefully transferring it to a wire cooling rack to cool completely before slicing.