Mix flour and grains (such as oats, rye, etc.) in a bowl.
Add dry yeast, salt, and sugar.
Pour in warm water while kneading the dough.
Add olive oil and knead again.
Cover the dough with plastic wrap and let it rise for at least 1 hour.
Shape the dough and place it in a pan.
Bake in a preheated oven at 180℃ for 30–35 minutes.
Place on a cooling rack and let cool completely.