For the mango ice-cream: Puree mango in a high speed blender in food processor until smooth.
Pour into a mixing bowl and stir in Lifeway kefir and maple syrup until well blended.
Freeze for 2-3 hours until reaches the consistency of creamy ice-cream.
Note: If you leave overnight, you can simply take out to defrost until it reaches the ideal ice-cream texture you prefer.
Preheat oven to 350ºF for the GF graham cracker crumbles.
In a high speed food processor, process oats, coconut, maple syrup, cinnamon, vanilla, sea salt until forms fine crumbles. Remove and place into a bowl. Stir coconut oil and 1 egg white to hold the ingredients together (or mix in 2 Tbsp flax soaked with 1 Tbsp water for a "flax egg".
Place in parchment-lined square pan and press until it forms an even layer on bottom of pan.
Heat for 20-25 minutes or until starts to brown and forms a solid layer.
Cool and break into crumbles.
Scoop frozen mango mixture into cups, top with graham crumbles. Optional: Garnish with unsweetened coconut flakes.