In a small bowl, mix the dry yeast with 1 tablespoon of sugar and half of the warm milk. Let it sit for about 10 minutes until it becomes frothy.
Mix Dry Ingredients:
In a large mixing bowl, combine the sifted flour, flax seeds, salt, and baking powder.
Combine Wet Ingredients:
In another bowl, whisk together the remaining warm milk, apple cider vinegar, egg, sunflower oil, and the remaining sugar.
Form the Dough:
Pour the wet ingredients into the dry ingredients and mix until well combined.
Add the frothy yeast mixture and continue to mix until a dough forms.
Knead the dough on a floured surface for about 10 minutes until it becomes smooth and elastic.
First Rise:
Place the dough in a greased bowl, cover it with a damp cloth, and let it rise in a warm place for about 1 hour or until it has doubled in size.
Shape the Dough:
After the dough has risen, punch it down to release the air. Knead it briefly and shape it into a loaf or divide it into smaller portions to make individual rolls.
Place the shaped dough into a greased loaf pan or on a baking sheet lined with parchment paper.
Second Rise:
Cover the dough again and let it rise for another 30 minutes.
Preheat the Oven:
Preheat your oven to 180 degrees Celsius (350 degrees Fahrenheit).
Bake the Bread:
Before placing the bread in the oven, brush the top with the softened butter.
Bake the bread in the preheated oven for 25-30 minutes, or until the top is golden brown and the bread sounds hollow when tapped.
Cool the Bread:
Remove the bread from the oven and let it cool on a wire rack before slicing.