Preheat the oven to 200 degrees Celsius/ 400 degrees Fahrenheit. Butter a loaf pan of about 20x10 cm/ 8x4 inches.
In a large bowl, mix together the flour, oats, baking powder, baking soda, salt, sugar, yogurt and lightly beaten egg. Use a spoon to mix the ingredients. Don't over mix. The dough will be slightly sticky.
Place the dough into the prepared tin, smooth the surface and bake immediately for 30 to 40 minutes or until golden.
Check if the bread is baked by tapping it on the underside, it should sound hollow.