In a large mixing bowl, combine all the dry ingredients: rolled oats, sunflower seeds, hemp hearts, chia seeds, ground flax seeds, psyllium husk, and salt. Stir well to distribute everything evenly.
Add the olive oil, maple syrup, and water. Mix thoroughly until the dough is thick and all ingredients are fully moistened.
Pour the dough into a greased or parchment-lined loaf pan and press it firmly into the pan to smooth the top.
Let the mixture sit at room temperature for 1 hour, allowing the seeds and oats to absorb the liquid and for the psyllium and chia to bind the dough.
Preheat your oven to 350°F (175°C).
Bake in the loaf pan for 30 minutes.
Carefully remove the loaf from the pan and place it directly on the oven rack or on a cooling rack inside the oven to allow air circulation.
Bake for another 30 minutes, or until the loaf is golden, firm, and dry to the touch.
Let cool completely before slicing, allowing it to set and firm up for clean, even cuts.