Preheat your oven to 375°F (190°C). Grease a small loaf pan and line with parchment for easy removal.
In a large bowl, whisk flour, oats, baking powder, baking soda, and salt. Dry ingredients get to know each other before they meet the wet stuff.
In another bowl, mix oat yogurt, warm water, oil, and honey or maple syrup if you’re using it. Stir until smooth—no clumps, please.
Pour the wet ingredients into the dry and mix just until combined. The batter will be thick, not runny—that’s normal for a bread batter with yogurt.
If you like, fold in seeds or herbs for extra personality. Don’t overmix; you’re aiming for a tender crumb, not a chew toy.
Spoon the batter into the prepared loaf pan. Smooth the top with a spatula and give it a tiny tap to settle the batter.
Bake for 28–34 minutes, or until the top is golden and a toothpick comes out clean. Ovens vary, so start checking at 28.
Let the loaf cool in the pan for 10 minutes, then transfer to a rack. Slice when completely cooled or you’ll have a crumbly situation you won’t enjoy.