Prepare everything you need. Get the eggs and condensed milk out of the fridge in advance, so that they have time to warm up to room temperature.
Melt butter in the microwave. Pour in condensed milk.
100 g butter, 380 g condensed milk
Mix with a whisk until smooth. Enter the eggs, continuing whipping.
2 pcs egg
Pour in the sifted flour and baking powder.
150 g flour, 1 tsp baking powder
Mix until a smooth homogeneous dough is obtained, flowing from the corollas with a ribbon.
A baking dish, here detachable with a diameter of 20 cm, lubricate with butter or vegetable oil, pour out the dough. Spread evenly with a spatula.
Bake in the oven at 170℃ for 30 minutes. Sponge cake on condensed milk is well browned. Readiness to check with a toothpick, it should come out of the center dry.
Release from the mold, allow to cool completely, and then wrap in food wrap and leave for 12-24 hours. At this time, the biscuit matures, moisture is redistributed. If cut and used for the cake at once, the structure will be slightly different, more brittle.
Sponge cake on condensed milk cut lengthwise into 2-3 cakes. For this type of sponge cake, a simple sour cream is well suited: beat the fat sour cream with sugar until the grains dissolve. Enjoy your meal!