Preheat the oven to 395 F/200 C
Crack the eggs into the mixing bowl and add the sugar. With the rod blender/whisk blend them until they turn white-ish and soft.
In the second bowl mix the white flour, baking powder, and salt.
Wash one of the oranges and zest the peel. Cut the zested orange into wheels. Juice the rest of them.
Mix the orange zest, orange juice with the egg and sugar mixture.
Add the dry ingredients mix and mix again making sure no lump is left.
In a lined mold either circular or rectangular add the batter.
Add the orange wheels and a healthy sprinkle of sugar on top of everything.
Bake for 25 minutes at 375/190 C until the top is golden, and a toothpick comes out clean from it.
Enjoy with a cup of coffee or a glass of fresh horchata! Que aproveche!