Just mix a four-ingredient filling and you're most of the way there.
Ingredients
1partchallah dough (equivalent to about 1 challah)
1cupbrown sugar
1/2cupvanilla sugar
1tbspcinnamon
1stickmargarine, melted
Some streusel crumbs featured in this post: https://betweencarpools.com/baking-your-rosh-hashanah-challah-these-are-the-best-crumbs-for-your-challah-more-you-need-to-know/
Instructions
Preheat oven to 350F.
Roll out your piece of challah dough to about the size of a baking sheet.
In a bowl, combine brown sugar, vanilla sugar, cinnamon, and melted margarine.
Spread filling evenly over dough and roll up as tightly as possible. Twist dough as shown above. Place into a parchment-lined loaf pan and cut slits in each bump of the babka.
Sprinkle with streusel crumbs.
Bake until golden, about 25-30 minutes (this baking time may differ greatly, depending on your oven, size of babka, type of pan, and many factors).