Whisk together melted butter, sugar, and cocoa in a large bowl till smooth. Whisk in vanilla and eggs. Stir in flour and salt till well combined. Pour into a well greased 9x13" pan.
Beat cream cheese and sugar till smooth. Add egg and vanilla, beat till smooth. Pour over brownie layer.
Drop cherry pie filling by spoonfuls over the cream cheese layer. Swirl with a butter knife.
Bake at 350° for 45-50 minutes or until middle is barely set. Cool completely before serving.