Apple Texas sheet cake is a thin, tender apple-spice cake baked in a large rimmed pan and finished with warm brown sugar frosting. Chopped apples keep the crumb moist, while the quick stovetop frosting sets into a sweet, lightly nutty layer; cut it into squares for an easy crowd dessert.
Ingredients
- 2 cups (250 g) all-purpose flour, spooned into the measuring cup and leveled
- 1½ cups (300 g) granulated sugar
- 1 teaspoon baking soda
- 1 teaspoon ground cinnamon
- ½ teaspoon fine salt
- ½ cup (113 g) unsalted butter
- 1 cup (240 ml) water
- ½ cup (120 ml) buttermilk, at room temperature
- 2 large eggs (about 100 g without shells), at room temperature
- 1 teaspoon vanilla extract
- 2 cups (about 250 g) peeled, cored, finely chopped firm apples, such as Granny Smith or Honeycrisp
Brown Sugar Frosting
- ½ cup (113 g) unsalted butter
- ½ cup (110 g) packed light brown sugar
- ¼ cup (60 ml) milk
- 3 cups (360 g) powdered sugar, sifted if lumpy
- 1 teaspoon vanilla extract
- ½ cup (55 g) chopped pecans, optional
Instructions
- Heat the oven to 375°F (190°C). Grease a 13-by-18-inch (33-by-46-cm) rimmed sheet pan. If your pan is smaller, use a 9-by-13-inch (23-by-33-cm) pan and expect a thicker cake that may need a few extra minutes to bake.
- Whisk the flour, granulated sugar, baking soda, cinnamon, and salt in a large bowl. Set it beside the stove. In a medium saucepan, combine the butter and water. Bring to a boil over medium heat, stirring so the butter melts, then immediately pour the hot mixture over the dry ingredients. Stir until no dry flour remains.
- In a separate bowl, whisk the buttermilk, eggs, and vanilla until blended. Gradually stir this mixture into the batter. Fold in the chopped apples, distributing them evenly. The batter will be fairly loose; that is normal for this style of sheet cake.
- Spread the batter evenly in the prepared pan, pushing it into the corners. Bake for 20–24 minutes, until the top springs back lightly when touched and a toothpick inserted near the center comes out without wet batter. A few moist crumbs are fine. Avoid using a browned edge as the only cue, since the thin cake can dry quickly.
- While the cake bakes, make the frosting. Put the butter, brown sugar, and milk in a saucepan. Bring to a gentle boil over medium heat, stirring constantly, and boil for 1 minute. Remove from the heat. Stir in the powdered sugar and vanilla until smooth, then fold in the pecans if using. If the frosting thickens before the cake is ready, stir in milk 1 teaspoon at a time.
- Take the cake out of the oven and pour the warm frosting over it while the cake is still hot. Spread it quickly with an offset spatula or the back of a spoon; it begins to set as it cools. Let the cake cool in the pan for at least 20 minutes before cutting into 24 squares. For neater cuts, wait until it is fully cool.
Tips
- Measure flour by spooning it into the cup and leveling the top, or use the listed weight. Scooping directly from the bag packs in extra flour and can make the cake dense.
- Choose firm apples and chop them into small, even pieces, roughly ¼ inch (6 mm). Large chunks can make the thin cake harder to slice and may leave damp pockets.
- If you do not have buttermilk, stir 1½ teaspoons lemon juice or white vinegar into ½ cup (120 ml) milk and let it stand for 5 minutes. It will be thinner than buttermilk but works here.
- Frost while the cake is hot and the frosting is warm. If either cools too much, the frosting will be harder to spread evenly. A rimmed pan is important because the batter is loose.
Serving Suggestions
Serve the squares at room temperature, when the frosting has set and the apple pieces are easy to cut through. A small scoop of vanilla ice cream or a spoonful of softly whipped cream complements the cinnamon and brown sugar. For a dessert table, cut the cake into smaller bite-size pieces and serve with coffee, black tea, or hot cider.
Variations
For a warmer spice profile, add ¼ teaspoon ground nutmeg or allspice to the dry ingredients. Replace up to ½ cup (60 g) of the flour with whole-wheat pastry flour for a slightly heartier crumb; using regular whole-wheat flour can make the cake more dense. For a nut-free cake, simply leave out the pecans. You can also use walnuts in their place, or add ½ cup (75 g) raisins with the apples.
For a tangier finish, add ½ teaspoon finely grated lemon zest to the batter. If using a very sweet apple, such as Fuji, the cake will taste milder and less tart; Granny Smith gives a sharper contrast. Keep the apple quantity the same so the batter bakes at the expected rate.
Storage and Reheating
Because the cake contains fresh fruit and dairy-based frosting, refrigerate leftovers within 2 hours of baking or serving. Cover the pan or transfer slices to an airtight container; refrigerate for 3–4 days. The frosting firms in the refrigerator. Let individual pieces sit at room temperature for 20–30 minutes before serving, or microwave one slice for 10–15 seconds to soften it slightly. Avoid overheating, which can make the frosting run.
To freeze, arrange cooled, unfrosted cake pieces in a single layer until firm, then wrap individually and store in a freezer-safe container for up to 2 months for best quality. Thaw overnight in the refrigerator and bring to room temperature before serving. Frosted cake can also be frozen, though the frosting may lose some of its smooth texture after thawing.
Frequently Asked Questions
Can I make apple Texas sheet cake ahead?
Yes. Bake and frost it a day ahead, cool completely, cover, and refrigerate. Bring it toward room temperature before serving for a softer crumb and frosting. For the freshest texture, do not leave it at room temperature overnight.
Do I need to peel the apples?
Peeling is recommended because the thin cake bakes quickly and apple skins can remain firm. If you do not mind a little extra texture, finely chopped unpeeled apples will work.
Can I use a 9-by-13-inch pan?
Yes, but the cake will be thicker than it is in a standard sheet pan. Begin checking it at about 25 minutes and continue baking as needed; the center should spring back and show no wet batter on a toothpick. The frosting quantity is generous, so spread it evenly over the smaller surface.
Why did my frosting turn grainy or stiff?
Brown sugar that has not dissolved fully can leave a grainy texture, so stir the butter, sugar, and milk constantly as they come to a boil. Powdered sugar can also form lumps; sift it first if needed. If the finished frosting is too stiff to spread, mix in milk a teaspoon at a time while it is still warm.
Can I use salted butter?
Yes. Use the same amount and reduce the fine salt in the cake to ¼ teaspoon. The frosting may taste a little saltier, so unsalted butter gives you more control over the final flavor.
How do I know the cake is done without drying it out?
Start checking at 20 minutes. The surface should spring back lightly, and a toothpick in the center should come out clean or with a few moist crumbs, not liquid batter. Oven and pan differences affect the exact time, so rely on these cues as well as the timer.
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