Preheat oven to 180C
In a large bowl, cream butter and 2 cups sugar until light fluffy.
Add 1 egg at a time, beating well after each addition. Beat in vanilla.
Mix labneh and laban together
Combine flour, baking soda and salt; add alternately with labneh laban mixture, beating just enough after each addition to keep batter smooth.
Spoon half the mix into a greased bundt pan, i greased with tahini
Combine cinnamon and sugar and sprinkle evenly onto first layer
Cover the cinnamon sugar with the remaining batter
Bake for 60-70 mins (not less)
Cool for 15 minutes before removing from pan to a wire rack to cool completely.