This slow cooker 3-ingredient Arnold Palmer pound cake is my dad’s official birthday dessert now. He’s always been obsessed with Arnold Palmers—the half tea, half lemonade combo—so I wanted to capture that same summery flavor in an easy, no-fuss cake. Instead of turning on the oven, everything happens right in the slow cooker, which keeps the cake insanely moist with a tight, tender crumb. A sweet-tart lemon glaze soaks into a black-tea-infused pound cake base, so every bite tastes like his favorite drink in dessert form, with almost no hands-on work.
Serve this Arnold Palmer pound cake slightly warm right out of the slow cooker so the lemon glaze is still glossy and drippy. I like to slice it thick and pair it with vanilla ice cream or a dollop of whipped cream to balance the tangy lemon. A tall glass of iced tea, lemonade, or of course an actual Arnold Palmer makes the flavors pop even more. For a casual get-together, you can leave the cake right in the black slow cooker insert and let everyone slice their own pieces—it stays moist for hours on the warm setting and feels very laid-back and homey.
Slow Cooker 3-Ingredient Arnold Palmer Pound CakeServings: 8-10
Ingredients
1 (15.25-ounce) box lemon cake mix
1 1/4 cups prepared sweet black tea (strongly brewed and cooled)
1 cup prepared lemonade (divided: 3/4 cup for batter, 1/4 cup for glaze)
Optional but recommended: nonstick cooking spray or butter for greasing slow cooker insert
Directions
Grease the slow cooker: Lightly coat the inside of a 5- to 6-quart slow cooker insert with nonstick cooking spray or a thin layer of butter. This helps the pound cake release easily and encourages those golden brown edges.
Mix the dry base: Add the lemon cake mix to a large mixing bowl. Use a whisk or fork to break up any lumps so the mix is light and even—this helps create that tight, tender crumb you want in a pound cake.
Brew and cool the tea: If you haven’t already, brew a very strong batch of sweet black tea (about double the usual strength), then let it cool to room temperature. The stronger the tea, the more that classic Arnold Palmer flavor will come through in the cake.
Make the batter: To the bowl with the lemon cake mix, pour in 1 1/4 cups cooled sweet black tea and 3/4 cup lemonade. Stir with a spatula or wooden spoon just until the batter is smooth and no dry streaks remain. The batter will be slightly thicker than a regular cake batter, more like a loose pound cake batter.
Fill the slow cooker: Pour the batter into the greased slow cooker insert. Use a spatula to spread it into an even layer, smoothing the top so it cooks uniformly and develops that even, tea-speckled crumb.
Slow cook the cake: Cover the slow cooker with its lid. Cook on HIGH for 2 to 2 1/2 hours, or on LOW for 3 1/2 to 4 hours, until the top is set, the edges are golden brown, and a toothpick inserted into the center comes out mostly clean (a few moist crumbs are fine, but no wet batter). Avoid opening the lid during the first 90 minutes so the cake can rise properly.
Cool slightly in the insert: Turn off the heat and remove the lid. Let the cake cool in the slow cooker insert for about 20 to 30 minutes. This resting time helps the crumb set so it’s dense yet tender, and it’s the perfect moment to mix your lemony glaze.
Make the lemonade glaze: In a small bowl, whisk together the remaining 1/4 cup lemonade with 1 to 1 1/2 tablespoons of dry lemon cake mix (scooped from the box before you used it, if you reserved some, or you can skip thickening if you like a thinner glaze). Whisk until smooth and slightly thick but still pourable. Adjust with a splash more lemonade if it’s too thick or a pinch more mix if it’s too thin.
Glaze the warm cake: While the cake is still warm in the black slow cooker insert, use a skewer or toothpick to poke small holes all over the top. Slowly drizzle the lemonade glaze over the surface, letting it seep into the holes and drip down the sides. The warm cake will drink up the glaze, giving you that glossy, tangy finish and deep Arnold Palmer flavor.
Serve from the slow cooker: Let the glazed cake sit for another 10 to 15 minutes to absorb the glaze. Slice directly from the slow cooker insert, using a spatula to lift out thick, moist pieces with visible tea-infused crumb and shiny lemon glaze. Serve warm or at room temperature.
Store leftovers: Once completely cool, cover the slow cooker insert tightly or transfer leftover slices to an airtight container. Store at room temperature for up to 2 days or in the refrigerator for up to 4 days. For the best texture, let chilled slices come to room temperature or warm them briefly in the microwave before serving.
Variations & Tips
To lean even more into the Arnold Palmer vibe, you can use a lemon cake mix with extra zest or add 1 teaspoon of finely grated lemon zest to the batter for brighter citrus notes. If you prefer unsweetened tea, you can brew plain black tea and add 1 to 2 tablespoons of sugar or honey while it’s hot, then cool completely before measuring for the recipe. For a stronger tea presence, steep 2 to 3 tea bags per cup of water so the flavor doesn’t get lost in the batter. If you’d like a thicker, more traditional pound-cake-style glaze, whisk 1/2 to 3/4 cup powdered sugar into the 1/4 cup lemonade instead of using extra cake mix, then drizzle over the cooled cake. For a slightly richer texture without adding more ingredients, swap 1/4 cup of the lemonade in the batter with 1/4 cup of prepared sweet tea, then increase the lemonade in the glaze for balance. You can also line the bottom of the slow cooker insert with a parchment circle and grease it to make lifting the cake out easier for cleaner slices. Food safety tips: Always make sure the cake reaches a safe internal temperature (at least 190–200°F in the center for a fully cooked cake) if you’re unsure; undercooked batter can harbor bacteria. Let the brewed tea and lemonade cool to room temperature before mixing into the dry cake mix to avoid starting the cooking process unevenly. Do not leave the finished cake in the slow cooker on the warm setting for more than 2 hours to reduce food safety risk; cool and refrigerate leftovers promptly. When storing, keep the cake covered to prevent it from drying out and to protect it from cross-contamination with other foods in the fridge.
