Slow Cooker Pomegranate and Pistachio Custard Cake

Name: Slow Cooker Pomegranate and Pistachio Custard Cake
Prep time: 20 min
Cook time: 3 h
Total time: 3 h 20 min
Yield: 8 servings
Cuisine: Persian
Ingredients: 1½ cups (180 g) all-purpose flour, sifted; 1 cup (200 g) granulated sugar; 1½ teaspoon (6 g) baking powder; ½ teaspoon (3 g) fine sea salt; 4 whole (200 g) large eggs, at room temperature; 1 cup (240 ml) whole milk, at room temperature; 3 tablespoon (45 ml) pomegranate molasses; 4 tablespoon (57 g) unsalted butter, melted and cooled slightly; ¾ cup (90 g) roasted unsalted pistachios, finely ground; 1 teaspoon (5 ml) vanilla extract; ½ teaspoon (1 g) ground cardamom (optional); ½ cup (85 g) pomegranate arils (seeds), fresh (optional)

From the MyKitchenBank Kitchen

A moist, custard-centered cake infused with tart pomegranate molasses and studded with ground pistachios, cooked low and slow in a slow cooker for a tender crumb and rich, velvety center. This Persian-inspired dessert has a delicate sponge top and a silky custard layer that forms as it cooks—no oven required.

Prep: 20 min
Cook: 3 hr
Wait: 30 min
Total: 3 hr 50 min
Makes: 1 cake (8 servings)

Save to My Kitchen Jump to recipe

Steps

Before you start

Line your slow cooker (5–6 quart) with parchment paper extending up the sides for easy removal
Bring eggs and milk to room temperature (about 30 minutes)
Toast pistachios lightly in a dry skillet to deepen their flavor, then pulse in a food processor until finely ground
Grease the parchment lining with butter so the cake releases cleanly

1
Prepare the slow cooker
- Line your slow cooker with parchment paper, extending it 2 inches (5 cm) up the sides.
- Butter the parchment well to prevent sticking.
- This makes the finished cake easy to lift out.
+ Show details− Hide details
Tip: Overlapping two sheets of parchment across the bottom in an X shape makes removal easier.
2
Mix dry ingredients
- In a large mixing bowl, sift together flour, sugar, baking powder, salt, and ground cardamom if using.
- Whisk until evenly combined.
- Set aside.
+ Show details− Hide details
Tip: Sifting aerates the flour and prevents lumps in the final batter.
3
Combine wet ingredients
- In a separate bowl, whisk together room-temperature eggs and milk until smooth.
- Add pomegranate molasses, melted butter, and vanilla extract.
- Whisk until fully incorporated and the mixture is uniform in color and texture.
+ Show details− Hide details
Ready when: Mixture is smooth with no streaks of pomegranate molasses visible
Tip: Room-temperature ingredients mix more smoothly and create a better emulsion.
4
Fold together and add pistachios
- Pour the wet mixture into the dry ingredients.
- Using a rubber spatula, fold gently until just combined—do not overmix.
- Stop when a few dry streaks remain.
- Fold in the ground pistachios until evenly distributed.
- The batter will be thin and pourable, not thick like typical cake batter.
+ Show details− Hide details
Ready when: Batter is smooth and pourable, pistachios are evenly mixed throughout
Tip: Overmixing develops gluten and makes the cake tough; gentle folding keeps it tender.
5
Pour into slow cooker
- Pour the batter into the prepared slow cooker, spreading it evenly with the spatula.
- If using pomegranate arils, scatter them across the top (they will sink during cooking).
+ Show details− Hide details
Tip: Don't stir after pouring; the cake and custard need to form in layers.
6
Cook on low heat
- Cover the slow cooker and cook on LOW for 3 hours.
- The cake will rise and set on top while a custard layer forms on the bottom.
- You'll see the cake pull slightly away from the edges.
- Do not lift the lid during cooking—steam escape extends the cooking time.
+ Show details− Hide details
Ready when: A toothpick inserted in the cake portion (not the custard) comes out with moist crumbs; the center jiggles slightly when shaken gently
Tip: Slow cookers vary in temperature; if your cake is still very soft after 3 hours, add 15–20 minutes more.
7
Cool in the slow cooker
- Turn off the slow cooker and let the cake rest, covered, for 15 minutes.
- This allows the custard to set slightly and the cake to firm up enough to lift out without breaking.
+ Show details− Hide details
Ready when: Cake edges are set and pulling away cleanly from the parchment
Tip: This resting period is crucial—it prevents the cake from falling apart when you remove it.
8
Remove from slow cooker
- Carefully lift the parchment paper by the extended edges to lift the entire cake out of the slow cooker.
- Place it on a wire rack or large plate.
- Let it cool for another 15 minutes.
+ Show details− Hide details
Ready when: Cake is warm but cool enough to touch, parchment peels away easily
Tip: Go slowly to avoid tearing; if the parchment resists, let it cool a few more minutes.
9
Serve
- Cut into 8 wedges or squares.
- Serve warm or at room temperature.
- The cake will have a spongy, moist top layer and a silky custard bottom—spoon some of that custard onto each plate.
- Garnish with a few extra pomegranate arils and a sprinkle of chopped pistachios if desired.
+ Show details− Hide details
Tip: This cake is best enjoyed within a few hours of cooking while the contrast between layers is most pronounced.

Good to know

Tips

Pomegranate molasses is key to this recipe's authentic flavor—find it in Middle Eastern or specialty food stores, or online. Do not confuse it with grenadine (a sweetened syrup); pomegranate molasses is unsweetened and intensely tart.
The slow cooker method creates a naturally moist cake because steam circulates gently and evenly. If you don't have a slow cooker, you can bake this in a water bath in a 325°F (160°C) oven for 45–55 minutes, until a toothpick in the cake portion (not custard) shows moist crumbs.
Grinding pistachios too finely can release their oils and make the batter greasy; pulse in a food processor just until no large pieces remain, aiming for a breadcrumb-like texture.
Serve this cake warm or at room temperature with Greek yogurt, whipped cream, or a drizzle of honey for an elegant finish that complements its Persian heritage.

Make ahead

You can prepare the batter up to 8 hours ahead and refrigerate it, covered, in an airtight container or large bowl. Bring it back to room temperature (about 20 minutes) before pouring into the slow cooker. The cooking time remains 3 hours.

Storage & reheating

Store the cooled cake, covered, at room temperature for up to 2 days. The custard layer will firm up slightly but remain moist and creamy. Refrigerate in an airtight container for up to 4 days. Reheat gently in a 275°F (135°C) oven for 10–12 minutes until warmed through. Freezing is not recommended because the custard layer separates and becomes grainy upon thawing.

Substitutions

pomegranate molasses → 4 tablespoons (60 ml) pomegranate juice reduced on the stovetop to 3 tablespoons (45 ml), or 2 tablespoons (30 ml) balsamic vinegar mixed with 1 tablespoon (15 ml) honey. Pomegranate molasses is authentic and concentrated; juice or vinegar-honey are workable but less tangy.
roasted unsalted pistachios → blanched almonds, finely ground, or a mix of pistachios and slivered almonds. Almonds are milder and less visually striking but maintain the nutty flavor and tender crumb.
ground cardamom → 0.5 teaspoon ground cinnamon or a pinch of ground cloves. Cinnamon gives warmth without the floral note; cloves are bold and should be used sparingly.
pomegranate arils (seeds) → a scattering of dried cranberries or fresh raspberries. Both add tartness and visual interest, though they won't sink as the arils do.