Add the honey to the water and whisk together. Add active dry yeast and let sit for 10-15 minutes.
In a large mixing bowl, whisk together flours, salt, caraway and sunflower seeds. Pour in the yeast mixture and half the olive oil. Using a rubber spatula, mix together all ingredients until a sticky ball is formed and no flour bits remain.
Cover and let dough rise somewhere warm until it has doubled in size, about 2-3 hours. It will be sticky and well-hydrated.
Once the dough has doubled, lightly butter a loaf pan. Drizzle the remaining tablespoon of olive oil across the top of the dough and brush it over the surface to coat. Using your hand or a dough scraper, pull the dough out onto a lightly floured surface, oiled side down, and shape it into a loaf. Lift and transfer dough into prepared loaf pan. If needed, lift each end from the middle and gently stretch it into the corners so the dough fills the pan.
Set aside, uncovered, and let rise for another hour. As it rises, you’ll start to see bubble formation and the top will smooth out.
When you’re ready to bake, preheat oven to 375ºF (190ºC) then bake for 45 minutes until the top is browned and it sounds hollow when you tap on the top. Turn loaf out onto a wire cooling rack and let cool for an hour before slicing to allow the cooking process to complete.