1. Prepare three 8 inch cake pans with parchment paper circles in the bottom and grease the sides. Preheat oven to 350°F (176°C) .
2. In a large mixing bowl, cream butter and sugar together until light in color and fluffy, about 3-4 minutes. Do not skimp on the creaming time.
3. Add sour cream and almond extract and mix until well combined.
4. Add egg whites in two batches, mixing until well combined after each. Scrape down the sides of the bowl as needed to be sure all ingredients are well incorporated.
5. Combine dry ingredients in a separate bowl, then combine the milk and water in a small measuring cup.
6. Add half of the dry ingredients to the batter and mix until well combined. Add the milk mixture and mix until well combined. Add remaining dry ingredients and mix until well combined. Scrape down the sides of the bowl as needed to be sure all ingredients are well incorporated.
7. Divide the batter evenly between the cakes pans and bake for about 21-23 minutes, or until a toothpick comes out with a few crumbs.
8. Remove the cakes from the oven and allow to cool for about 2-3 minutes, then remove to cooling racks to cool completely.

TO MAKE THE FROSTINGS:

9. To make the raspberry frosting, first puree the raspberries in a food processor. Strain the puree through a fine mesh sieve to remove the seeds.
10. In a large mixer bowl, beat the butter and shortening together until smooth.
11. Slowly add half of the powdered sugar and mix until smooth.
12. Add 5 tablespoons of raspberry puree and mix until smooth.
13. Slowly add remaining powdered sugar and mix until smooth. Add additional raspberry puree, as needed. Set aside.
9. To make the almond frosting, beat the butter and shortening together until smooth.
11. Slowly add half of the powdered sugar and mix until smooth.
12. Add the almond extract and 2 tablespoons of water and mix until smooth.
13. Slowly add remaining powdered sugar and mix until smooth.
14. Add remaining tablespoon of water, if needed.

TO ASSEMBLE THE CAKE:

15. To put the cake together, use a large serrated knife to remove the domes from the top of the cakes so that they’re flat. Place the first cake on a serving plate or a cardboard cake round.
16. Spread about 1 cup of raspberry frosting evenly on top of the cake.
17. Add the second layer of cake and another cup of raspberry frosting.
18. Top the cake with the remaining layer and frost the cake with the almond frosting. Refer to my tutorial for frosting a smooth cake, if needed. Once frosted, use the patterned side of an icing smoother/comb and create the patterned lines on the sides.
19. Use the remaining raspberry frosting to pipe rosettes around the edge of the cake. I used Ateco tip 844, but Wilton 1M or 2D would work as well.
20. Color some of the remaining almond frosting green and use it to add some leaves. Sprinkle the cake with some gold sprinkles, if desired.