Sourdough Piña Colada Sheet Cake

Sunshine in every bite—this cake is a sweet tropical dream, kissed with pineapple, coconut, and a touch of tangy sourdough.

🍰 Sourdough Piña Colada Sheet Cake

🧺 Tools from the Cottage Cupboard

• 🔮 Baking Dish or Sheet Pan (9" x 13")Your vessel of transformation—where the batter becomes golden enchantment.

• 🌀 Stand Mixer (or a sturdy wooden spoon and elbow grease, for the traditionalist witches and bakers)

🧪 Wet Ingredients – Stirred with Intention

• 🧈 190g Butter, melted (rich and golden like summer sun)

• 🥚 4 Eggs, around 60g each (gathered fresh if you’re lucky)

• 🍂 10g Vanilla Extract (about 2 teaspoons—pure essence of comfort)

• 🥛 125g Whole Milk (creamy and nourishing)

• 🌾 200g Sourdough Starter (active or discard—your bubbling kitchen companion)

• 🍍 1 can Crushed Pineapple (approx. 8 oz or 227g, with juice) (bright and juicy—sunshine in a tin)

🏺 Dry Ingredients – The Foundation of Sweet Alchemy

• 🌾 250g All-Purpose Flour (the sturdy base of any good cottage cake)

• ✨ 9g Baking Powder (to lift the spell just right)

• 🌋 5g Baking Soda (a spark of rise and balance)

• 🍚 250g White Granulated Sugar (sweet as a whisper on the wind)

• 🧂 4g Salt (a grounding pinch to harmonize the sweetness)

🍍✨ Tropical Glaze Ingredients – The Final Drizzle

• 🥥 1 can Cream of Coconut (sweet, thick, and creamy—like island moonlight in a can)

• 🍈 1 tbsp Lime Juice (bright and zesty, to awaken the flavor)

• 🍋 1 tsp Lemon Juice (a touch of sunshine)

• 🍍 6 oz Pineapple Juice (golden and juicy—straight from the heart of the fruit)

• 🍚 2 cups Powdered Sugar, plus more as needed (to thicken the glaze until it's just right—soft, dreamy, and pourable)

Ingredients

🔥 Step One: Begin the Bake

Preheat your oven to 180°C (350°F) and lightly grease a 9" x 13" baking dish with cooking spray, butter, or coconut oil. This will be your enchanted baking vessel—set it aside while you prepare the rest of the spell.

batter

🥣 Step Two: Mix the Moonlit Potion

In a small mixing bowl or batter jug, combine the melted butter, eggs, vanilla, crushed pineapple (with juice), milk, and sourdough starter. Whisk until the mixture is smooth and well combined—like a golden potion full of sunshine and sweetness.

Once blended, set the wet ingredients aside while you prepare the dry.

🌾 Step Three: Blend the Dry Foundations

In the bowl of a stand mixer, combine the all-purpose flour, baking powder, baking soda, sugar, and salt. Stir gently until everything is evenly blended—this is the dry base, the heart of the cake’s structure. Make sure all ingredients are well distributed, like earthbound elements waiting for a spell to awaken them.

🪄 Step Four: Bring the Batter to Life

Now, pour the wet mixture over the dry ingredients in your stand mixer bowl. Whisk together gently but thoroughly, allowing the textures to blend into a smooth, golden batter.This is where the magic happens—the potion and the powder becoming one, ready to rise into something truly enchanting.

Ready to go in the oven

🍰 Step Five: Bake the Spell

Gently pour the cake batter into your prepared 9" x 13" baking dish, spreading it evenly like smoothing soil before planting something wonderful.Place it into your preheated oven and bake at 180°C (350°F) for about 30 minutes, or until the top turns a soft golden brown and a toothpick comes out clean.

🌬️ Step Six: Let the Magic Rest

Once the cake is golden and baked through, remove it from the oven and allow it to cool completely in the baking dish. Let it rest undisturbed—this quiet moment lets all the sweetness settle, sealing in the softness and flavor.

cooked cake

🌧️ Step Seven: Pour the Potion

Once the cake has cooled completely, take a skewer, chopstick, or the handle of a wooden spoon and gently poke holes all over the surface.

Then, pour the tropical glaze slowly and evenly over the top, letting it soak into every crevice like warm rain into soft earth. Allow the cake to sit a while longer so the glaze can fully infuse, turning each slice into a sweet, sun-drenched spell.