Pre-heat the oven to 446 ℉/230C. Line a round baking pan 9 unch/23 cm with parchment paper.
Mix the flours, sugar, salt, and bicarbonate soda into a large mixing bowl and stir. Add the egg, buttermilk, and oil, and knead just until the dough comes together.
Form a round loaf of bread and place on a lightly greased parchment paper. With a knife cut a cross on the top and spread some quinoa seeds on top.
Bake for 15 min and lower oven temperature to 200 and bake for another 20-25 min until the loaf sounds hollow when tapped. Cool on a wire rack.