Rhubarb 6 Layer Cake: A Sweet & Tangy Delight

My grandmother, bless her heart, had a way of turning the simplest ingredients into something truly magical. I vividly remember her rhubarb patch, a sprawling emerald green oasis in her backyard. Every spring, she’d emerge with armfuls of the vibrant stalks, and the air would soon be filled with the sweet-tart aroma of rhubarb pies, crumbles, and, most memorably, this incredibly unique six-layer cake. The combination of tart rhubarb, fluffy cake, and gooey marshmallows was unlike anything I’d ever tasted, and to this day, it’s a flavor that instantly transports me back to her sun-drenched kitchen.

Recipe Overview

• Prep Time: 20 minutes
• Cook Time: 35-40 minutes
• Total Time: 55-60 minutes
• Servings: 12-16
• Yield: 1 9×13 inch cake
• Dietary Type: Vegetarian

Ingredients

• 4 cups rhubarb, chopped
• ¾ cup brown sugar
• 4 cups miniature marshmallows
• 1 (3 ounce) package strawberry jello
• 1 white cake mix (plus ingredients called for on the box, such as eggs and oil)
• ½ cup brown sugar
• 1 teaspoon cinnamon

Equipment Needed

• 9×13 inch baking pan
• Mixing bowls
• Measuring cups and spoons
• Spatula
• Oven

Instructions

1. Preheat your oven to 350°F (175°C). Make sure the oven rack is in the center position.
2. Evenly spread the chopped rhubarb across the bottom of your 9×13 inch baking pan. This forms the first layer.
3. Sprinkle the ¾ cup brown sugar evenly over the rhubarb. This is your second layer, adding sweetness to balance the rhubarb’s tartness.
4. Now, generously spread the 4 cups of miniature marshmallows over the brown sugar layer. This creates the third, gooey layer.
5. Sprinkle the entire contents of the 1 (3 ounce) package of strawberry jello evenly over the marshmallows. Be sure to distribute it uniformly, as this will add both flavor and vibrant color.
6. Prepare the white cake mix according to the instructions on the box. Gently pour the cake batter over the strawberry jello layer. This forms the fifth layer of the cake.
7. In a small bowl, combine the ½ cup brown sugar and 1 teaspoon cinnamon. Mix well until the brown sugar is evenly coated with cinnamon.
8. Sprinkle this cinnamon-brown sugar mixture evenly over the top of the cake batter. This creates a final sweet and spiced layer.
9. Bake in the preheated oven for 35 to 40 minutes.
10. Use the spring test to check for doneness. Gently press the center of the cake; if it springs back, it’s done. If not, continue baking for a few more minutes, checking frequently. A toothpick inserted into the center should come out clean, or with only a few moist crumbs.
11. Remove the cake from the oven and let it cool completely in the pan before serving.

Expert Tips & Tricks

• Rhubarb Prep: Choose firm, crisp rhubarb stalks for the best texture. If the rhubarb is very thick, consider halving or quartering the stalks lengthwise before chopping.
• Marshmallow Magic: Using kitchen shears to snip the marshmallows in half makes them spread more evenly and melt more quickly.
• Jello Distribution: For consistent flavor, ensure the jello powder is evenly distributed. You can lightly tap the pan to help it settle.
• Preventing a Soggy Bottom: If you’re concerned about a soggy bottom crust, try pre-baking the rhubarb and brown sugar layer for 10 minutes before adding the marshmallows and jello.
• Oven Variations: Ovens can vary, so keep a close eye on the cake during the final minutes of baking. If the top is browning too quickly, tent it loosely with foil.
• Cake Mix Alternatives: While a white cake mix provides a blank canvas, you could experiment with a yellow cake mix for a richer flavor or even a strawberry cake mix to amplify the strawberry jello.

Serving & Storage Suggestions

This rhubarb six-layer cake is best served at room temperature or slightly chilled. Cut into squares and serve as is, or with a dollop of whipped cream or a scoop of vanilla ice cream for an extra-special treat.

To store leftovers, cover the cake tightly with plastic wrap or transfer it to an airtight container. It will keep at room temperature for up to 2 days, or in the refrigerator for up to 4 days. While freezing isn’t recommended due to the marshmallow layer, individual slices can be frozen for up to 1 month. Thaw in the refrigerator before serving.

Nutritional Information

(Estimated values. Actual values may vary depending on specific ingredients and portion sizes.)

Nutrient	Amount per Serving	% Daily Value
Calories	350 kcal	18%
Total Fat	12g	18%
Saturated Fat	6g	30%
Cholesterol	20mg	7%
Sodium	250mg	11%
Total Carbohydrate	60g	20%
Dietary Fiber	1g	4%
Sugars	45g	–
Protein	3g	6%

Variations & Substitutions

• Gluten-Free: Use a gluten-free cake mix and ensure the jello is gluten-free (some brands contain wheat-based ingredients).
• Lower Sugar: Opt for sugar-free jello and reduce the amount of brown sugar used. You could also use a sugar substitute that is suitable for baking.
• Different Fruit: While rhubarb is the star of this recipe, you could experiment with other tart fruits like cranberries, sour cherries, or a mix of berries. Adjust the amount of brown sugar accordingly.
• Jello Flavors: Feel free to experiment with different jello flavors! Raspberry, cherry, or even lime could be interesting twists.
• Spice it Up: Add a pinch of ground ginger or cardamom to the cinnamon-brown sugar mixture for a warmer, more complex flavor.

FAQs (Frequently Asked Questions)

Q: Can I use frozen rhubarb?
A: Yes, frozen rhubarb works well in this recipe. Thaw it slightly and drain off any excess liquid before using.

Q: Can I make this cake ahead of time?
A: Yes, this cake can be made a day ahead of time. Store it covered in the refrigerator until ready to serve.

Q: Why is my cake soggy in the middle?
A: This could be due to insufficient baking time or an oven that isn’t heating evenly. Ensure the cake springs back when touched and that a toothpick inserted into the center comes out clean.

Q: Can I use a different size baking pan?
A: While a 9×13 inch pan is ideal, you can use an 8×8 inch pan, but the baking time may need to be increased. Watch it carefully.

Q: My marshmallows burned! What did I do wrong?
A: This usually happens if the marshmallows are too close to the heating element. Make sure your oven rack is in the center position and consider tenting the cake with foil if it’s browning too quickly.

Final Thoughts

This Rhubarb 6 Layer Cake is more than just a dessert; it’s a taste of nostalgia, a celebration of simple ingredients, and a testament to the magic that happens when tart meets sweet. Don’t be afraid to experiment with variations to make it your own. I encourage you to give this recipe a try and share your feedback. Perhaps serve it with a cup of Earl Grey tea for the perfect afternoon treat, and maybe, just maybe, you’ll create your own cherished memory with this unique and delightful cake.