Caramel Apple Texas Sheet Cake is like fall in a bite, with soft, spiced apple cake topped with a gooey caramel glaze that drips into every nook and cranny.
Preheat oven to 400°F. Prepare an 18x13 inch sheet pan with nonstick spray or line with parchment paper.
In a large mixing bowl, mix all purpose flour, granulated sugar, brown sugar, ground cinnamon, baking soda, and salt.
In a medium saucepan, melt butter with water over medium heat. Bring to a gentle boil, then pour into the dry ingredients and mix until smooth.
Add eggs, sour cream/buttermilk, and vanilla extract. Mix until combined. Fold in the diced apples.
Pour the batter evenly into the prepared baking sheet and smooth the top. Bake for 20–25 minutes, or until a toothpick inserted in the center comes out clean. Let cool slightly while you make the frosting.
Caramel Frosting
In a medium saucepan or small bowl, melt butter and heavy cream/milk over medium heat or in the microwave.
Gradually mix with powdered sugar in a large or medium bowl until smooth and thickened. Stir in vanilla extract and caramel sauce.
Spread frosting over the warm cake, while the frosting is also still warm. Allow the cake to cool completely in the pan before slicing. Enjoy!