Easy Nigella Rhubarb Flapjacks Recipe

Nigella Rhubarb Flapjacks
Yields: 8 Servings Difficulty: Easy Prep Time: 15 Mins Cook Time: 30 Mins Total Time: 45 Mins

Nigella Rhubarb Flapjacks are a delightful combination of tart rhubarb and sweet, chewy oats, making for a perfect treat. These flapjacks are not only easy to make but also provide a nostalgic comfort with their classic flavors. Ideal for afternoon tea, a quick snack, or even a dessert, this recipe will surely become a favorite in your household.

This recipe serves 8-10 people and can be prepared in approximately 45 minutes to 1 hour.

In this article, I will guide you through making Nigella Rhubarb Flapjacks step by step, offering tips and tricks along the way.

What is Nigella Rhubarb Flapjacks?

Nigella Rhubarb Flapjacks are traditional British treats made with a mixture of oats, butter, and sugar, combined with tangy rhubarb for a unique twist. They are baked until golden and slightly crisp on the edges, offering a perfect balance of flavors and textures.

Nigella Rhubarb Flapjacks

Why You’ll Love This Recipe

  • Simple Ingredients – Uses pantry staples and fresh rhubarb.
  • Quick Preparation – Ready in under an hour.
  • Versatile Treat – Perfect for breakfast, snack, or dessert.
  • Family-Friendly – Loved by both kids and adults.
  • Healthy Twist – Rhubarb adds a nutritious element.

Ingredients Needed to Make Nigella Rhubarb Flapjacks

  • Oats: 300g (10.5 oz) – Use rolled oats for the best texture.
  • Butter: 200g (7 oz) – Unsalted is preferred.
  • Brown Sugar: 150g (5.3 oz) – Provides a rich, caramel flavor.
  • Golden Syrup: 100g (3.5 oz) – Acts as a binder and adds sweetness.
  • Rhubarb: 250g (8.8 oz) – Fresh, chopped into small pieces.
  • Vanilla Extract: 1 teaspoon – Enhances the flavor.
  • Salt: A pinch – Balances the sweetness.


  • Baking pan (20×20 cm or 8×8 inches)
  • Mixing bowls
  • Saucepan
  • Wooden spoon
  • Measuring cups and spoons
  • Sharp knife

Instructions to Make Nigella Rhubarb Flapjacks

Step 1: Preheat and Prepare

  • Preheat your oven to 180°C (350°F). Grease and line a baking pan with parchment paper.

Step 2: Cook the Rhubarb

  • In a saucepan, cook the chopped rhubarb with a bit of water until soft. This should take about 5-7 minutes. Set aside to cool.

Step 3: Melt the Butter and Sugar

  • In another saucepan, melt the butter, brown sugar, and golden syrup over low heat until fully combined and smooth.

Step 4: Mix the Ingredients

  • In a large mixing bowl, combine the oats, vanilla extract, and a pinch of salt. Pour the melted butter mixture over the oats and mix well. Stir in the cooked rhubarb until evenly distributed.

Step 5: Bake the Flapjacks

  • Transfer the mixture to the prepared baking pan, pressing it down firmly with a wooden spoon. Bake for 25-30 minutes, or until golden brown.

Step 6: Cool and Slice

  • Allow the flapjacks to cool in the pan for about 10 minutes before transferring to a wire rack to cool completely. Once cool, slice into squares or bars.
Easy Nigella Rhubarb Flapjacks Recipe
Nigella Rhubarb Flapjacks

What Do I Serve With Nigella Rhubarb Flapjacks?

Nigella Rhubarb Flapjacks can be paired with a variety of accompaniments to enhance their flavor.

  • Whipped Cream – A light and airy contrast.
  • Ice Cream – Complements a warm flapjack perfectly.
  • Fresh Berries – Adds a burst of fruity flavor.
  • Yogurt – Offers a healthier option.
  • Hot Custard – Creates a comforting dessert.

Pro Tips to Make Perfect Nigella Rhubarb Flapjacks

Follow these tips to ensure your Nigella Rhubarb Flapjacks turn out perfectly every time.

  • Use Fresh Rhubarb – Ensures the best flavor and texture.
  • Press Firmly – Helps the flapjacks hold their shape.
  • Don’t Overbake – Keeps them chewy and not too hard.
  • Cool Completely – Makes slicing easier and cleaner.
  • Store Properly – Keeps them fresh and delicious.

Variations of Nigella Rhubarb Flapjacks

  • Add Nuts – Incorporate almonds or walnuts for extra crunch.
  • Mix in Spices – A pinch of cinnamon or nutmeg adds warmth.
  • Chocolate Chips – For a sweeter, indulgent twist.
  • Dried Fruits – Apricots or raisins complement the rhubarb.
  • Coconut Flakes – Adds a tropical flair.

How do I Store Nigella Rhubarb Flapjacks Leftovers?

  • Airtight Container – Keeps them fresh for up to a week.
  • Refrigerate – Extends their shelf life.
  • Freeze – For longer storage, up to 3 months.
  • Separate Layers – Use parchment paper to avoid sticking.
  • Cool Completely – Prevents condensation and sogginess.

How do I Reheat Nigella Rhubarb Flapjacks Leftovers?

  • Oven – Warm at 150°C (300°F) for 10 minutes.
  • Microwave – Heat on medium for 20-30 seconds.
  • Toaster Oven – Provides a quick and even reheat.
  • Serve Warm – Best enjoyed slightly heated.
  • Avoid Overheating – Keeps them from drying out.

Nutrition Value (per serving):

  • Calories: 250 kcal
  • Carbohydrates: 35g
  • Protein: 3g
  • Fat: 11g
  • Saturated Fat: 7g
  • Fiber: 2g
  • Sugar: 20g
  • Sodium: 50mg


How do I know when my rhubarb flapjacks are done?

Your rhubarb flapjacks are done when they are golden brown around the edges and set in the middle. They should feel firm to the touch but still slightly soft in the center. This usually takes about 25-30 minutes in the oven at 180°C (350°F).

Can I use frozen rhubarb for this recipe?

Yes, you can use frozen rhubarb for this recipe. Make sure to thaw and drain the rhubarb well before cooking it to avoid excess moisture, which can affect the texture of the flapjacks.

How long do rhubarb flapjacks last?

Rhubarb flapjacks can last up to a week when stored in an airtight container at room temperature. For longer storage, you can refrigerate them for up to two weeks or freeze them for up to three months.

What can I substitute for golden syrup in rhubarb flapjacks?

If you don’t have golden syrup, you can substitute it with honey, maple syrup, or light corn syrup. Each will provide a slightly different flavor but will work well to bind the ingredients together.

Final Words

Nigella Rhubarb Flapjacks are a simple and delicious treat that anyone can make. They’re perfect for a quick snack, a sweet dessert, or even to share at a gathering. Enjoy making these flapjacks and savor the wonderful combination of flavors. Happy baking!

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