Preheat the oven to 180°C/350°F.
Wrap the sweet potatoes in foil and bake them for 40-60 minutes, depending on their size: wait until they're fork-tender.
Mix the dry (flour, sugar, spices, baking soda) and the wet ingredients (eggs, vanilla extract, olive oil) in two different bowls.
When the potatoes are ready, peel them, mash them with a fork or a masher and add them to the wet ingredients.
Mix all the ingredients using a wooden spoon. Notice that it will not be a cake texture dough, nor a bread one. It will be right in the middle.
Place the mixture into a plum cake pan lined with baking paper.
Set the oven to 160°C/320°F and bake the bread for 40-45 minutes.
Enjoy it for breakfast with butter and jam.