Lemon Custard Rhubarb Cake

Lemon Custard Rhubarb Cake is a wonderful combination of tart and sweet flavors, making it a perfect dessert for spring or summer gatherings. This cake brings together the zestiness of lemon with the slightly sour notes of rhubarb, creating a deliciously moist and flavorful treat. The custardy texture of the cake serves as a perfect base for the rhubarb, which partially sinks into the batter as it bakes, creating a unique layered effect. The freshness from the lemon zest and the hint of sour cream add richness and depth to the cake, making it a standout dessert.

The recipe is straightforward, allowing both novice and experienced bakers to enjoy the pleasures of homemade sweets. Not only is this cake delicious, but it’s also visually appealing, with vibrant rhubarb peeking through the golden crust. Serve it at a brunch, picnic, or family dinner, and watch as your friends and family can’t resist going back for seconds!

Ingredients about Lemon Custard Rhubarb Cake

List of ingredients with measurements

  • 1 cup all-purpose flour
  • 3/4 teaspoon baking powder
  • 1/2 teaspoon Kosher salt
  • 2 large eggs
  • 1 large egg yolk
  • 1 1/2 cups sugar
  • 1/4 cup melted unsalted butter (cooled)
  • 1/4 cup sour cream
  • 2 tablespoons freshly squeezed lemon juice
  • 2 teaspoons finely grated lemon zest
  • 8 ounces rhubarb stalks (cut into 1/2 inch slices)
  • 1 tablespoon sugar (for rhubarb)

Optional ingredient substitutions

If you want to make some changes, here are a few substitutions you can consider:

  • Instead of all-purpose flour, you can use a gluten-free flour blend to cater to gluten-sensitive individuals.
  • For a dairy-free version, substitute the unsalted butter with coconut oil and the sour cream with a dairy-free yogurt.
  • You can replace sugar with a natural sweetener like honey or maple syrup, but be mindful that it may alter the texture and flavor slightly.

How to Make Lemon Custard Rhubarb Cake

Step 1: Prepare the pan

Start by preheating your oven to 350 degrees F (175 degrees C). Take a 9-inch springform pan and butter it generously. Cut a circular piece of parchment paper to fit the bottom of the pan and place it inside. Butter the parchment as well, ensuring it is well-coated. Dust the entire inside of the pan with flour, shaking off any excess. This will help keep the cake from sticking.

Step 2: Mix dry ingredients

In a medium mixing bowl, whisk together the flour, baking powder, and Kosher salt. Make sure all the dry ingredients are evenly combined, as this will ensure a well-risen cake.

Step 3: Prepare the wet ingredients

In a large bowl, whisk the two large eggs and one additional yolk with the sugar until the mixture turns very pale and thick, which usually takes about 45 seconds to a minute. Once combined, add the melted butter (make sure it’s cooled), sour cream, lemon juice, and lemon zest. Mix everything until you achieve a smooth consistency.

Step 4: Combine wet and dry ingredients

Gently add the dry mixture into the wet ingredients. Use a spatula to fold the ingredients together, ensuring the batter remains smooth. Don’t overmix; just combine until there are no visible dry spots. Once combined, scrape the batter into your prepared cake pan.

Step 5: Bake the cake

Put the cake in the preheated oven and bake for about 20 minutes. While the cake is baking, prepare the rhubarb by tossing the cut stalks with one tablespoon of sugar and setting it aside to macerate.

Step 6: Add the rhubarb

After 20 minutes, take the cake out of the oven. Carefully top the cake with the sugared rhubarb while avoiding the outer ½ inch to leave a rim. This will prevent the rhubarb from burning while also allowing it to partially sink into the batter.

Step 7: Continue baking

Return the pan to the oven and bake for an additional 25-35 minutes. You’ll know the cake is done when it turns golden brown, the rhubarb is cooked through, and the center is set.

Step 8: Cool and serve

Once baked, take the pan out and transfer it to a wire rack. Let the cake cool in the pan for about 10 minutes, then run a knife around the edges to loosen it. Carefully release the cuff and slide the cake onto a cooling rack. Allow it to cool completely and then chill it in the refrigerator before serving.

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How to Serve Lemon Custard Rhubarb Cake

Best ways to serve Lemon Custard Rhubarb Cake

Lemon Custard Rhubarb Cake is best served chilled, making it perfect for warm days. You can cut it into wedges and serve it on a beautiful cake platter. Consider dusting the top with powdered sugar for a lovely presentation.

Serving suggestions or pairings

This cake pairs beautifully with whipped cream or a scoop of vanilla ice cream. You can also serve it alongside a light fruit salad or fresh berries to enhance its flavor profile. For a refreshing drink, consider pairing it with iced tea or lemonade.

How to Store Lemon Custard Rhubarb Cake

Proper storage methods

To keep your Lemon Custard Rhubarb Cake fresh, store it in an airtight container or cover it well with plastic wrap. You can keep it at room temperature for up to two days or refrigerate it for up to a week. Ensure it is completely cool before covering it to avoid sogginess.

Tips for reheating or freezing

If you want to freeze the cake, slice it into individual pieces and wrap each slice in plastic wrap before placing them in a freezer bag. This way, you can enjoy a piece whenever you want without thawing the whole cake. To reheat, simply microwave a slice for 15-20 seconds or warm it in the oven at a low temperature until heated through.

Tips to Make Lemon Custard Rhubarb Cake

Common mistakes to avoid

One of the most common mistakes in baking this cake is not letting the butter cool before adding it to the mixture. Too-hot butter can cook the eggs, leading to an undesirable texture. Additionally, when adding the dry ingredients to the wet, make sure not to overmix, as this can create a dense cake.

Helpful tips for better results

  • Use fresh rhubarb stalks for the best flavor. If you can’t find rhubarb, you can substitute it with other fruit, such as strawberries or blueberries, keeping in mind that the taste will change.
  • For a deeper lemon flavor, consider adding more lemon zest or a splash of lemon extract.
  • If you want a sweeter cake, adjust the sugar according to your taste but remember that this will also affect the texture.

Variation of Lemon Custard Rhubarb Cake

Suggested variations or twists on the recipe

You can offer a twist on this classic by incorporating other fruits, such as diced strawberries or blueberries, along with the rhubarb for added flavor and color. For a nutty flavor, add chopped almonds or walnuts to the batter. Another variation is to layer the fruit throughout the cake instead of just on top, for a more evenly distributed flavor.

Adjustments for dietary preferences

If you’re looking for a healthier option, consider using whole wheat flour instead of all-purpose flour to increase the fiber content. For a lower-calorie option, you can replace sugar with a sweeter alternative such as stevia, though be careful with the amount as it can be more concentrated.

FAQs

What can I do if the dish isn’t turning out right?

If your cake isn’t rising, check that your baking powder is fresh. Also, ensure you’re measuring ingredients correctly. Too much flour or not enough leavening agents can lead to dense cakes. If the cake is cracking, it may be a sign of over-baking, so monitor the baking time closely.

Can I make this ahead of time?

Absolutely! This cake can be made a day in advance. Just make sure it is stored properly in the fridge. The flavors often meld together in the fridge, enhancing the overall taste.

What can I substitute for ingredients?

If you don’t have rhubarb, you can use other tart fruits like sour cherries or even apples, but the texture will change. For eggs, a flaxseed meal or a chia seed mixture can be used as a vegan alternative, although this will alter the cake’s texture. If you need a gluten-free option, use gluten-free flour to substitute the all-purpose flour.

Enjoy making and savoring your Lemon Custard Rhubarb Cake! It’s an exquisite treat that highlights the best of spring and summer flavors, making it perfect for any occasion.

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Lemon Custard Rhubarb Cake with fresh rhubarb and lemon zest, topped with custard.

Lemon Custard Rhubarb Cake


  • Author: Louna
  • Total Time: 1 hour 15 minutes
  • Yield: 8 servings 1x
  • Diet: Vegetarian

Description

Lemon Custard Rhubarb Cake is a moist and tangy dessert combining tart rhubarb, zesty lemon, and a creamy custard texture. Perfect for spring or summer gatherings, it’s easy to make and visually stunning with its golden top and vibrant rhubarb accents.


Ingredients

Scale
  • 1 cup all-purpose flour
  • 3/4 teaspoon baking powder
  • 1/2 teaspoon Kosher salt
  • 2 large eggs
  • 1 large egg yolk
  • 1 1/2 cups sugar
  • 1/4 cup melted unsalted butter (cooled)
  • 1/4 cup sour cream
  • 2 tablespoons freshly squeezed lemon juice
  • 2 teaspoons finely grated lemon zest
  • 8 ounces rhubarb stalks (cut into 1/2 inch slices)
  • 1 tablespoon sugar (for rhubarb)

Instructions

  1. Preheat the oven to 350°F (175°C). Grease a 9-inch springform pan, line with parchment paper, and dust with flour.
  2. In a medium bowl, whisk together the flour, baking powder, and salt.
  3. In a large bowl, whisk eggs and yolk with 1 1/2 cups sugar until pale and thick.
  4. Add cooled melted butter, sour cream, lemon juice, and zest. Mix until smooth.
  5. Fold in the dry ingredients until just combined and pour the batter into the prepared pan.
  6. Bake for 20 minutes.
  7. Meanwhile, toss rhubarb with 1 tablespoon sugar and set aside to macerate.
  8. Remove cake from oven, gently top with sugared rhubarb, avoiding the outer 1/2 inch.
  9. Return to oven and bake for an additional 25–35 minutes, until set and golden.
  10. Cool in pan for 10 minutes, release sides, and cool completely on a wire rack. Chill before serving.

Notes

  • Use fresh rhubarb for best results.
  • Do not overmix the batter to avoid a dense cake.
  • Let butter cool before adding to avoid scrambling the eggs.
  • Chilling before serving enhances the custardy texture.
  • Prep Time: 20 minutes
  • Cook Time: 55 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 slice
  • Calories: 280
  • Sugar: 26g
  • Sodium: 160mg
  • Fat: 11g
  • Saturated Fat: 6g
  • Unsaturated Fat: 4g
  • Trans Fat: 0g
  • Carbohydrates: 40g
  • Fiber: 1g
  • Protein: 4g
  • Cholesterol: 70mg

Keywords: lemon custard rhubarb cake, rhubarb dessert, spring cake, summer baking, lemon cake, rhubarb custard

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