1. Place the yeast, warm water and honey in the bowl fitted with the Kneading/crushing blade. Launch the P1 pastry program. After 30 seconds, open the lid and add the flours, sunflower seeds, flax seed and salt. After 2 minutes 30 seconds of mixing, your dough should be shaped like a ball. Be careful to leave it in the bowl to rise for the next 40 minutes of the program.
2. After 40 minutes, remove the dough using a spatula and knead for 5 minutes by hand on a lightly floured surface. Form a ball and place on a cookie sheet lined with parchment paper. Let it rise in a warm place for 1 hour 30 minutes.
3. Preheat the oven to 400°F.
4. Place a bowl of very hot water on the lower rack in the oven (this will help achieve a nice crust). Bake for 25 minutes. Lower the oven to 350°F and bake for another 15-20 minutes.