1Pour the warm milk into a small bowl or glass measuring cup. Add 1 tbsp of the granulated sugar and sprinkle the yeast overtop. Stir and allow to sit for 5-7 minutes, until frothy and activated.
2In a large bowl, whisk together the flour and salt.
3Once activated, pour the yeast mixture into the bowl of a stand mixer. Add the rest of the sugar (1/2 cup minus the 1 tbsp that was used to activate the yeast), Greek yogurt or sour cream, butter, eggs, vanilla, and the flour mixture.
4With the dough hook attachment (or with a wooden spoon if mixing by hand), mix on low speed for 1 minute, until barely combined. Rest for 5 minutes so the flour can soak up the liquids. Then, mix on medium speed for 5-7 minutes, until the dough is elastic, smooth, and is pulling away from the sides of the bowl.
5Transfer the dough to a lightly greased bowl. Cover and allow to rise in a warm environment for 30-45 minutes, or until doubled in size.
6While the dough is rising, prepare the cinnamon filling by mixing together the softened butter, brown sugar, cinnamon and vanilla until well combined.
7Grease a 9x13” baking pan with butter.
8Once the dough is done rising and has doubled, generously flour your work surface. Turn the dough out onto the surface and lightly sprinkle the top with more flour.
9If you are making 8 larger cinnamon rolls, roll the dough out to a 16x15” rectangle. For 12 smaller cinnamon rolls, roll it out to a 24x15” rectangle.
10Spread/smooth the cinnamon filling evenly all over the surface of the dough, leaving a very small border around the edges.
11Starting on the long end, tightly roll the dough up into a log.
12Using a sharp knife or unflavored floss, cut the dough into 8 larger or 12 smaller rolls total. Each roll should be ~2” in width.
13Place the rolls into the prepared baking pan.
14Cover the pan and allow to proof for another 25-30 minutes, until puffy.
15Preheat the oven to 350F.
16Once the rolls are proofed, warm the heavy cream in the microwave for 15 secs, and pour all over the rolls.
17For 8 larger rolls, bake at 350F for the first 22-24 mins. Then, turn the oven temperature up to 375F and bake for another 5-7 mins, until the tops are golden and the rolls are cooked through. For 12 smaller rolls, bake at 350F for the first 20-22 mins. Then, turn the oven temperature up to 375F and bake for another 5-7 mins.
18While baking, prepare the cream cheese frosting. In a large bowl using a handheld mixer, beat the cream cheese and softened butter until smooth and fluffy. Then, beat in the powdered sugar and vanilla until well combined and smooth.
19Remove the rolls from the oven and allow to rest for 10-15 mins.
20Spread the cream cheese frosting all over the rolls. Serve and enjoy!
If the dough seems a little too sticky, you can add 1 tbsp more flour at a time, until it starts to pull away from the sides of the bowl. Don’t add too much, you want the dough to be slightly sticky!