My DD calls them Kabooms! So maybe I should rename the recipe?

2 eggs
1 1/4 cup sugar
1 tsp vanilla sugar
4 tbs cocoa powder (unsweetened)
1/4 teaspoon salt
2/3 cup sifted flour
3 1/2 oz melted butter/margarine

"Middle" mixture:
3 1/2 oz melted butter/margarine
4 tbs sugar
2 tsp flour
good 1/3 cup milk - not low-fat!
2 tsp cocoa powder (unsweetened)
good 1/3 cup whipping cream

Beat eggs and sugar together thoroughly, until mixture is as light and fluffy as possible.
Mix in the other ingredients and make mixture smooth and
Pour mixture into small, fluted baking tins (or paper ones) and
bake in a 325F oven for 12 - 15 minutes.
The time can vary depending on how the flour is feeling that very day - I've noticed When you take them out, they should still be a little "wobbly" and rather immediately sink in the middle.
Let them cool on the baking plate.

Mix the ingredients for the "middle" mixture and let it boil JUST until it starts to thicken.
If you stir all the time it won't stick so much to the bottom of the saucepan.
Pour mixture in the hollows in the middle of the muffins.

Let cool and put the muffins, one by one, in the freezer.
Of course you are supposed to put them in something else once they've frozen properly.
Take them out 15 - 20 minutes before you eat them - by then they should be perfect in texture and taste!