Preheat the oven to 350°F (175°C). Grease a 4.5 x 8.5-inch bread pan and lightly flour. Set aside.
In a large bowl, whisk together all wet ingredients until smooth and well combined.
To make oat flour, blend either old-fashioned or quick oats until they form a fine powder that resembles flour. Measure out the required amount after blending.
In a separate bowl, mix together all the dry ingredients. If you're adding chocolate chips or nuts, fold them in now.
Gradually add the dry ingredients to the wet mixture, stirring until just blended. Avoid over-mixing to prevent the bread from becoming too dense.
Pour the batter into the prepared pan. Optionally, sprinkle 2 tablespoons brown sugar on top for a crunchy crust! Bake for 40–55 minutes. Check for doneness by inserting a fork or toothpick into the center; it should come out clean or with moist crumbs. If the bread's top starts to brown too quickly, shield it with foil.
Let bread sit in pan for 10 minutes before transferring to a wire cooling rack. Allow the bread to cool completely before slicing or it will crumble.
Notes
Note 1: Ensure you're using standard canned pumpkin puree and not pumpkin pie filling. Use only 1 cup of pumpkin, not the entire can. For optimal results, choose a high-quality pumpkin puree that's not too watery.Note 2: Ensure you use Greek yogurt, not regular. We highly recommend Greek Gods® honey-vanilla Greek yogurt for this recipe. Note 3: Once you've melted the coconut oil, measure to get 1/3 cup. Before mixing with other ingredients, make sure the coconut oil has cooled to room temperature. If it's too warm, it may lead to clumping.Note 4: This blend consists of warming spices. It's available in the spice section of many grocery stores, or you can create your own using our Pumpkin Pie Spice recipe.Storage:Store wrapped individual slices in an airtight container in the fridge for 2–3 days. For longer storage, wrap individual slices and freeze. To enjoy, microwave a frozen slice for 10–15 seconds.