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Key Lime Coconut Cake + Cardamon Graham Crumble

03.26.2021

Tart, tangy and oh so sweet. If you love key lime pie, this one is for you! Think key lime pie meets graham cracker coconut cake with the added bonus of a creamy Mascarpone whipped topping and a touch of amaretto. Oh and a zesty, key lime filling made with fresh key limes. It is mouthwatering.

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Key Lime Coconut Cake + Cardamom Graham Cracker Crumble + Amaretto Mascarpone Whipped Frosting + Toasted Coconut Shavings

Prep Time 40 minutes mins
Cook Time 25 minutes mins
Total Time 1 hour hr 5 minutes mins

Ingredients

Key Lime Coconut Cake:

  • 2-1/2 cups whole wheat flour
  • 3/4 cup graham cracker crumbs
  • 3 tsp baking powder
  • 1 tsp Himalayan sea salt
  • 1 cup coconut oil
  • 1-1/2 cups coconut sugar
  • 3 brown eggs large
  • 2 egg whites
  • 2 tsp vanilla extract
  • 1-1/2 cups coconut milk full fat
  • 1 cup toasted coconut shavings for decorating, see notes
  • 4 key limes for decorating

Cardamom Graham Cracker Crumble:

  • 3/4 cups graham cracker crumbs
  • 1/4 cup coconut sugar
  • 1/2 tsp baking powder
  • 1/2 tsp Himalayan sea salt
  • 4 tbsp coconut oil
  • 3 tsp vanilla extract

Key Lime Curd:

  • 1 cup key lime juice fresh
  • 3/4 cup coconut sugar
  • 2 tbsp lime zest organic
  • 1/4 tsp Himalayan sea salt
  • 2 tbsp coconut milk full fat
  • 3 tbsp non-gmo cornstarch dissolved in 3 tbsp cold water
  • 2 tbsp Myokos oat butter

Amaretto Mascarpone Whipped Cream Frosting:

  • 16 oz Mascarpone cheese 2-8 oz tubs
  • 1/4 cup Amaretto
  • 1 cup powdered sugar organic
  • 9 oz coconut whipped topping So Delicious Cocowhip
  • 1 tsp vanilla bean paste

Instructions

  • 4 layer, 6-inch cake
    Preheat Oven to 350 degrees.
    Grease cake pans with nonstick coconut oil.

Key Lime Coconut Cake:

  • Whisk the whole wheat flour, graham cracker crumbs, baking powder, and sea salt together.
    In another bowl, beat all wet ingredients until creamy and smooth.
    Sift in the dry mixture but do not overmix.
    Spread batter evenly into the greased pans.
    Bake for 25 minutes or until a toothpick inserted into the middle comes out clean.
    Let cakes cool completely.

Cardamom Graham Cracker Crumble:

  • Line a sheet pan with parchment paper.
    Whisk all of the dry ingredients together. Mix in the wet ingredients until small clumps form.
    Bake for 10-15 minutes. Cool completely.

Key Lime Curd:

  • In a small saucepan over medium heat, add the lime juice, coconut sugar, lime zest, and sea salt.
    Stir well to dissolve the sugar. Add cornstarch mixture and coconut milk, stirring well.
    Cook until the mixture thickens and lightly bubbles.
    Add butter and cook until it becomes a thick pudding
 like consistency. Let cool completely
.
    Chill for 2 hours in the refrigerator before using.

Amaretto Mascarpone Whipped Cream Frosting:

  • Whip the Mascarpone cheese and whipped topping together. Slowly add in the Amaretto and vanilla bean paste.
    Sift in the powdered sugar and whip until smooth and creamy. Add more powdered sugar if the mixture is too thin.
    To assemble the cake, spread a spoonful of frosting on each layer then top with a spoonful of key lime curd and a spoonful of graham cracker crumble. Repeat with all four layers.
    Top with extra graham cracker crumble, toasted coconut shavings and freshly washed key lime wedges!

Notes

For the toasted coconut, spread a cup of coconut shavings onto a parchment lined baking sheet and toast at 400 degrees for 10 minutes. I love Trader Joe’s coconut shavings. 

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Hi, I’m Arianna

an architect turned baker.

Behind each of my recipes, you will find a thoughtfully curated balance of sweet and savory flavors creating intrigue for both the eye and palette. Desserts to me, are about thoughtfulness and imagination while keeping a healthy balance in mind. In my eyes, the process of architectural design and the process of creating a recipe then composing its structure as one in the same.

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Key Lime Coconut Cake + Cardamon Graham Crumble

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