In a large bowl, combine Bisquick, buttermilk, and sugar in a bowl using a fork. Mix just until all combined to create a dough.

In a medium bowl, combine brown sugar, sugar, and cinnamon in separate bowl. Add 2 tablespoons melted butter and stir to moisten. Set aside.

Generously flour rolling surface. I know it seems like alot but trust me, this is a sticky dough. Turn dough out onto surface and start patting into a rectangular shape with your hands. Flour your hands as well.

Use a rolling pin to thin dough to about 1/2 inch thickness. Do not over-roll the dough will stick.

Once rolled out, pour 3/4 cup melted butter over entire surface to the edges.

Sprinkle sugar mixture over butter. Start rolling dough from long end.

Slice into1" to 1/2" slices. I used dental floss to slice mine. It really does work, without mushing the pastry.

Transfer slices to a well greased 9×13 pan. I used a spatula to make it easier.

Bake in preheated 375° oven for 25-30 minutes, until just golden brown on tops. Let sit for 5 minutes before serving.

Combine powdered sugar, milk, and vanilla until desired consistency and drizzle over top of rolls.

ENJOY!!!