How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Slow Cooker Blackberry Cake?

You need 10 ingredients. The key ingredients include: 5 tbsp butter, at room temperature, 1/2 cup granulated sugar, 2 None eggs, 1/3 cup sour cream, and more.

Is Slow Cooker Blackberry Cake suitable as baking & desserts?

Yes, Slow Cooker Blackberry Cake falls under the Baking & Desserts category and is a great choice for this type of meal.

How do I store leftover Slow Cooker Blackberry Cake?

Store in an airtight container at room temperature for up to 3–5 days. For longer storage, freeze for up to 3 months — no need to refrigerate or reheat.

Slow Cooker Blackberry Cake Recipe

Name: Slow Cooker Blackberry Cake
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 5 tbsp butter, at room temperature; 1/2 cup granulated sugar; 2 None eggs; 1/3 cup sour cream; 1/2 tsp vanilla extract; 3/4 cup all-purpose flour, plus 2 tbsp; 1/2 tsp baking soda; 5 oz frozen blackberries, plus extra to serve; 1 1/4 cups vanilla custard, warmed; None None ice cream, to serve

Bake this irresistible Slow Cooker Blackberry Cake at home. Made with butter, granulated sugar, eggs and sour cream. Easy step-by-step instructions incl…

This Slow Cooker Blackberry Cake relies on simple, everyday ingredients such as butter, at room temperature, granulated sugar, none eggs and sour cream. It comes together quickly and makes 4 servings, at about 632 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

Whether you're rounding off a family dinner, bringing a treat to a gathering, or simply satisfying a sweet craving, this Slow Cooker Blackberry Cake delivers. Serve it warm or at room temperature, and add a scoop of ice cream or a spoonful of whipped cream for an extra-special finish.

Updated Jun 30, 2026

Serves 4 Baking & Desserts

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Preheat the oven fully and bake on the middle rack for the most even results.
Check for doneness a few minutes early — a toothpick in the center should come out with just a few moist crumbs.
Let it cool before slicing so it sets properly and holds its shape.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
Brown sugar instead of white sugar adds a deeper, more caramel-like flavor.
A good 1:1 gluten-free flour blend works well if you need a gluten-free version.
Coconut cream is a reliable plant-based alternative to dairy cream.

No specific allergen information. Please check the ingredient list for possible allergens.

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Slow Cooker Blackberry Cake

Tips for the best results

Variations & substitutions

My Personal Notes

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