Chocolate Eclair Cake with Homemade Graham Crackers
A sophisticated no-bake dessert featuring layers of crispy homemade graham crackers, silky vanilla pudding mousse, and glossy chocolate ganache. This elegant cake combines the textures of classic eclairs with icebox cake simplicity. Perfect for dinner parties or special occasions when you want an impressive dessert that comes together over two days. The homemade crackers set this apart from versions using store-bought bases, delivering superior crunch and authentic flavor.
Ingredients
- 1 cup sugar, granulated
- ⅓ cup cornstarch, sifted
- ¼ teaspoon salt, fine
- 3 ¾ cups whole milk, room temperature
- 3 tablespoons butter, Land O Lakes, cut into 3 pieces
- 2 tablespoons vanilla extract, pure
- 2 tablespoons water, room temperature
- 1 packet (2 1/4 teaspoons) unflavored gelatin, powdered
- 1 ½ cups heavy whipping cream, cold
- 1 cup all-purpose flour, siftedcake flour1:1wheat
produces more tender crackers
- 1 cup whole wheat flour, sifted
- ⅓ cup sugar, granulated
- 1 teaspoon baking powder, aluminum-free
- ½ teaspoon ground cinnamon, freshly ground preferred
- ½ teaspoon salt, fine
- 1 large egg, room temperatureflax egg (1 tbsp ground flax + 3 tbsp water)1:1 by volumebinding
affects texture slightly
Full guide → - ¼ cup butter, melted
- ¼ cup honey, raw or processed
- 2 tablespoons whole milk, room temperature
- 1 cup semi-sweet chocolate chips, quality preferreddark chocolate chips1:1chocolate
deeper flavor
- ¾ cup heavy whipping cream, cold
Instructions
- 1
Combine sugar, cornstarch, and salt in a large saucepan.
- 2
Whisk in milk until smooth.
- 3
Bring to a boil over medium-high heat, whisking constantly.
- 4
Reduce heat to low and continue whisking for 5-7 minutes until thickened, scraping the bottom frequently with a rubber spatula.
- 5
Remove from heat and stir in butter and vanilla.
- 6
Pour into a large bowl and cover with plastic wrap pressed directly onto the pudding surface.
- 7
Refrigerate for 2 hours until cool.
- 8
Meanwhile, combine flours, sugar, baking powder, cinnamon, and salt in a bowl.
- 9
In another bowl, combine egg, melted butter, honey, and milk.
- 10
Add wet ingredients to dry mixture and stir until just combined.
- 11
Turn dough onto counter and gently knead until it comes together.
- 12
Wrap in plastic wrap and refrigerate for at least 1 hour.
- 13
Preheat oven to 300 degrees Fahrenheit.
- 14
Divide dough in half and roll each half on parchment paper to 1/16 inch thick, flouring as needed.
- 15
Place dough with parchment on baking sheets and bake for 5 minutes.
- 16
Rotate pans and bake for 5 more minutes.
- 17
Remove from oven and cut into 2 by 3 inch rectangles without separating.
- 18
Poke each cracker with a chopstick to create texture.
- 19
Return to oven and bake for 20 minutes, rotating pans halfway through.
- 20
Turn off oven, open door for 3 minutes, then close and leave crackers inside for 20 minutes to dry.
- 21
Transfer crackers to cooling racks to cool completely.
- 22
Stir water and gelatin together in a small bowl and let sit for 5 minutes.
- 23
Microwave gelatin mixture for 15-30 seconds until it starts to bubble and gelatin dissolves.
- 24
Beat whipping cream in a bowl at high speed until soft peaks form.
- 25
Add gelatin mixture and continue beating until stiff peaks form.
- 26
Whisk one-third of whipped cream into chilled pudding.
- 27
Gently fold remaining whipped cream into pudding until combined.
- 28
Cover the bottom of a 13 by 9 inch baking dish with graham crackers, breaking as needed.
- 29
Top with half of the pudding mixture and another layer of crackers.
- 30
Repeat with remaining pudding and crackers.
- 31
Place chocolate chips in a medium bowl.
- 32
Heat whipping cream in a small saucepan over low heat until bubbles form around the edge.
- 33
Pour hot cream over chocolate chips, let sit for 1 minute, then stir until smooth.
- 34
Pour ganache over crackers and gently spread to cover.
- 35
Refrigerate for 8 hours or overnight.
Tips
Bloom gelatin separately before adding to whipped cream to prevent lumps and ensure smooth, consistent texture throughout the mousse layer.
Make homemade crackers at least one day ahead so they fully dry out and crisp up in the oven, preventing them from softening when layered with filling.
Press plastic wrap directly onto the pudding surface while cooling to prevent a skin from forming on top, which would create lumps when folded with whipped cream.
Good to Know
Cover and refrigerate for up to 3 days. Do not freeze as the mousse layer separates and crackers lose crispness.
Homemade graham crackers can be made 2-3 days ahead and stored in an airtight container. Pudding can be prepared 1 day ahead. Assemble and add ganache 1 day before serving to allow flavors to meld and ganache to set properly.
Cut with a sharp, hot knife dipped in warm water and wiped between cuts for clean portions. Serve chilled, preferably within 2 hours of cutting to maintain cracker crispness.
Common Mistakes
Do not skip pressing plastic wrap directly onto pudding to avoid a tough skin forming on top.
Do not add gelatin to pudding without blooming it separately to prevent lumpy streaks.
Do not skip the oven drying step for crackers to avoid them becoming soft and soggy in the assembled cake.
Substitutions
Dairy-Free Swaps
General Alternatives
affects texture slightly
Full guide →FAQ
Can I use store-bought graham crackers instead of homemade?
Yes, but the texture and flavor will differ significantly. Store-bought crackers soften faster when layered with moist pudding. Use about 10-12 full crackers, broken into 2 by 3 inch pieces, and reduce layering depth accordingly.
What if my ganache is too thick or thin after spreading?
If too thick, gently warm it over low heat and re-spread. If too thin, refrigerate for 10-15 minutes to firm up before final spreading. Ganache should be pourable but thick enough to coat without running off edges.
How long can I keep assembled cake before serving?
The cake is best served within 8-24 hours after adding ganache. Beyond 24 hours, crackers begin losing crispness as moisture from pudding penetrates them. Cracks in the ganache continue to develop naturally.