Preheat your oven to 350 degrees F and butter or grease a 9 x 13 pan

The first thing you want to do is make the streusel. In a bowl combine the all purpose flour, sugar, brown sugar, cinnamon, and salt until combined. Add in the melted butter and mix together by hand until crumbles form. Set aside

In a large bowl combine the flour, sugar, baking powder, baking soda, and salt

In another bowl combine the sour cream, eggs, melted butter, and vanilla extract until combined

Pour the wet ingredients into the dry and mix until just combined

Pour 1/3 of the batter into the bottom of the prepared baking dish and then sprinkle the top with the cinnamon streusel. Repeat this step until you’ve used all of the batter and the streusel

Put into the preheated oven to bake for 50-60 minutes. Check with a cake tester at 50 minutes. If it comes out clean- it’s done! 

Once cooked let it cool

Now it’s time to make the glaze! In a bowl add the powdered sugar, melted butter, and cream. Whisk so no powdered sugar chunks remain. Drizzle as much or as little of the glaze over the top. Don’t worry if you didn’t use it all!

Slice, serve, cry, and repeat. This is definitely best served warm!