Whisk together in the bowl of a stand mixer (or a large bowl if doing this by hand) your cream, milk, yolk, sugar and yeast.
Add in the flour and salt and knead in the mixer for about 4 minutes or by hand for 6 minutes, or until the dough can be stretched a bit without tearing. Cover let rise for 1 hour.
Line an 8”x8” square baking pan with parchment paper. Lightly flour your counter and gently scoop your dough onto the flour. Stretch or roll the dough into a rectangle, widest from left to right, that measures about 12” by 10”. Spread the filling all over the dough. Roll the dough upwards and away from your into a log. Once rolled up, cut the log of dough into 9 equal pieces. Place rolls into the baking pan, cover and proof for about 45 minutes or until the buns fill all of the pan.
Preheat your oven to 350F. Once hot, bake the buns for about 30 minutes. Let them cool for at least 15 minutes before glazing.
Filling
Melt the butter and stir into brown sugar and cinnamon. Spread the filling over the dough and roll up as directed.
Yogurt Glaze
Whisk all of your ingredients together until smooth. Spread on warm buns!