Prinsesstårta (Princess Cake) by Korena in the Kitchen
"The original recipe was created in the 1930s by a Swedish home economics teacher named Jenny Åkerström, who taught the three Swedish princesses of the time. She published a series of four cookbooks called “The Princess Cookbooks” and in one of the editions, there was a recipe for “Grön Tårta” (green cake). One story is that this later became known as “princess cake” (prinsesstårta) because the three princesses are said to have loved it so much. Another story is that Ms. Åkerström actually created three very elaborate “princess cake” recipes – a different one for each princess – and that the current version is a simplified combination of all three."
Triple Chocolate Mousse Cake