With a gooey cinnamon filling between two moist layers of cake swirled with cinnamon sugar, this Cinnamon Roll Cake tastes just like cinnamon rolls—but in cake form!
Whisk together the flour, 1 cup sugar, baking powder, salt, and pudding mix in a large mixing bowl. Add the butter, oil, eggs, vanilla, and sour cream. Mix everything together well until a thick dough forms.
Mix the brown sugar, cinnamon, and pecans all together in a medium bowl. Sprinkle the mixture over the batter in the pan. Scoop the remaining cake batter over the filling and smooth out the top.
Bake your Bundt cake for 45-50 minutes, or until a toothpick stuck into the center comes out clean. Cool the cake in the pan on a wire rack for 20 minutes.