Melt 1 stick of butter in the microwave or on the stove.

In a blender, add the ingredients, but add the flour gradually. Blend very well and slowly to avoid damaging your blender.

Place the mixture in a bowl and mix everything well.

Grease the bottom and sides of a pressure cooker with butter and add a little flour. Note: Use plenty of butter and avoid leaving lumps or pieces of butter.

Then add the mixture to the pressure cooker and cook for 35 to 36 minutes over medium heat.

After 35 or 36 minutes, turn off the heat and let it cool for 15 minutes. To check if the bread is cooked, insert a knife; if it comes out clean, it's done. Loosen the edges a bit, remove from the mold, and serve.