01 -
Turn the oven on to 350°F and grease a 9x13 pan with some nonstick spray.
02 -
Grab a big bowl and mix milk, sugar, eggs, flour, and baking powder. Add vanilla and slowly stir in melted butter while mixing at a low speed. Pour into the greased pan.
03 -
In a smaller bowl, mix cinnamon, brown sugar, butter, and a little flour till blended.
04 -
Drop spoonfuls of the cinnamon mixture onto the cake batter. Use a knife to swirl it around till it looks marbled.
05 -
Put it in the oven for 35-40 minutes. It’s done when a knife in the center comes out clean.
06 -
In a separate small bowl, stir together powdered sugar, milk, and vanilla until smooth.
07 -
Pour the sweet glaze over the warm cake. Cut into pieces and enjoy while warm!