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1
Preheat the oven to 325F.
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2
Line three 8-inch round cake pans with parchment paper and lightly coat with coconut oil.
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3
Set aside.
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4
In a medium bowl, whisk together the flours, potato starch, arrowroot, baking powder, baking soda, xanthan gum, and salt.
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5
Add 1 1/4 cups of the coconut oil, the agave nectar, applesauce, vanilla, the almond extract, if using, and the hot water.
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6
Stir with a rubber spatula until the batter is smooth.
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7
Divide the mixture evenly among 3 medium bowls.
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8
Add several drops of one food coloring to each bowl and mix until the color is evenly distributed and to your liking.
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9
Pour the batter into the prepared pans.
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10
Bake for 12 minutes, rotate, and bake until a toothpick inserted in the center comes out clean, about 15 minutes more.
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11
Let cool in the pans on a rack for 30 minutes.
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12
Run a knife along each cakes edges to remove it from the pan.
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13
To assemble, place the green cake layer on a serving plate.
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14
Spread the raspberry preserves over it.
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15
Place the yellow cake layer on top of it.
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16
Spread with the apricot preserves.
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17
Top with the red cake layer and pour the chocolate sauce on the top and on the sides, spreading it evenly over the entire cake with a rubber spatula.
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18
Chill the cake for 20 minutes to harden chocolate glaze.