Sweet-Tart Lemon Sheet Cake with Buttery Base

Name: Sweet-Tart Lemon Sheet Cake with Buttery Base
Ingredients: 3 cups crushed shortbread cookies (about 11-15oz blended into fine crumbs); 5 tablespoons melted unsalted butter; 1 tiny pinch salt; 1 tablespoon freshly grated lemon peel (roughly 1 lemon worth); 3/4 cup room temp buttermilk; 2/3 cup room temp sour cream; 3 whole eggs at room temp; 1 egg white at room temp; 1 tablespoon vanilla flavoring; 1 teaspoon lemon flavoring (if you want); 1/3 cup veggie oil; 1/4 cup plain flour; 1 box (15.25oz) lemon cake mix (we like Duncan Hines); 3 egg yolks; 1 whole egg; 3/4 cup white sugar; 1/2 cup fresh lemon juice; 2 tablespoons grated lemon peel (about 2 lemons); 4 tablespoons unsalted butter; 1 1/2 cups barely softened unsalted butter; 1 teaspoon lemon flavoring; 1/4 cup heavy cream; 6-7 cups icing sugar; 1 drop yellow food coloring gel; 1 cup broken shortbread cookie pieces

yummygusto.com

Treat yourself to a layered sweet treat mixing tangy lemon cake, crumbly shortbread base, zingy lemon filling and fluffy buttercream for an amazing flavor combo.

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