Preheat the oven to 180°C. Grease a 24 × 10 cm loaf pan or line it with baking paper.
In a mixing bowl, combine the gluten-free oat flakes, salt, sunflower seeds, and pumpkin seeds.
In a separate bowl, beat the egg. Add yogurt, baking soda, and apple cider vinegar. Mix well.
Pour the wet mixture into the dry ingredients and stir until fully combined.
Let the batter rest for 10 minutes so the oats can absorb moisture.
Transfer the batter to the prepared loaf pan and smooth the top.
Sprinkle extra seeds over the surface.
Bake for 30–35 minutes, or until golden and a toothpick inserted into the center comes out clean.
Cool in the pan for 5–10 minutes, then transfer to a wire rack.
Let the bread cool completely before slicing.
Notes
Use certified gluten-free oats if baking for someone with gluten intolerance or celiac disease. For a softer texture, pulse half of the oats into a coarse flour before mixing. Toast slices before serving for the best flavor.