Line a baking pan with parchment paper and pour in the batter.
Bake the brownie in an oven preheated to 180 degrees Celsius (top/bottom heat mode) for about 30-35 minutes (the cake may still be slightly sticky in the middle).
Remove the pan from the oven and cool on a wire rack.
Before serving, you can additionally sprinkle the brownie with powdered sugar on top.
Film
Uwagi
A glass has a capacity of 250 ml. The recipe video is in Polish, but you can watch it to see the step-by-step process.