Preheat oven to 350 degrees.
Add graham cracker sheets to a food processor and mix until the sheets turn into crumbs. Add whole wheat flour, sugar, baking soda, lime zest and salt. Mix until combined.
In a separate bowl, whisk the eggs and add lime juice, melted coconut oil, vanilla extract, and milk. Mix until combined.
Add the wet ingredients to the dry ingredients and mix with a spatula until combined. Stir in coconut flakes.
*Bake for 10-12 minutes.
Wait for the cookies to cool. Add 1/2 scoop of frozen yogurt between two cookies. Gently press the cookies together to create a sandwich. Eat or freeze immediately.