Broccoli boil 5-7 minutes, beat with a blender in a puree and gently add the eggs, salt, baking soda, flour and beat well again with a blender.
Oven on. Spread the baking paper on a baking sheet, grease with butter, put the broccoli puree, level, put in the oven for 20 minutes at 180 degrees.
While the cake is baked prepare the filling. Mushrooms fry with onions in a pan, add salt and pepper (do not salt, we have hard cheese in the recipe) fry until the liquid evaporates.
The mushrooms and put in blender, add cheese, processed cheese, sour cream, salt, pepper to taste.
Once again grind into a homogeneous mass.
On the finished cake to put the mushroom filling.
Using baking paper roll into a roll. Leave in the refrigerator for 2 hours.
Here is a roll turned out, the paper is well removed, the roll holds its shape well, the mushroom filling is tender, you can cut it into portions perfectly.