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Home » Desserts

Crunchy Oat and Nut Streusel Topping

Updated: Mar 6, 2026 · Published: Jan 27, 2026 by LynnH · This post may contain affiliate links · Leave a Comment

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Make the Perfect Make Ahead Freezer Crumble topping mixture. Save time in the kitchen with this homemade large batch of fruit crumble topping recipe. This versatile, 700g professional-style streusel is designed specifically for the freezer, making it easier than ever to serve a warm, comforting dessert. Whether you’re using seasonal stewed apples or frozen berries, simply grab what you need and sprinkle.

Because it’s a no-thaw freezer recipe, you can go from "craving" to "baking" in seconds. Perfect for small-batch solo treats such as Streusel Mince Pies, Apple Crumbles, Individual Mincemeat and Pear Crumbles or large family-sized pies.

Large bag on streusel crumble mixture.
Jump to:
  • Ingredients for making Streusel Crumble Topping with Oats and Nuts
  • Method
  • How to make a basic Crumble Topping without Oats and Nuts
  • How Much Crumble Mix is Needed by Dish Size
  • Storage.
  • FAQ and Tips

Ingredients for making Streusel Crumble Topping with Oats and Nuts

This is just an overview of the ingredients I used to make this recipe, along with possible alternatives and why I may have used them. A complete list of ingredients and full instructions can be found in the Recipe Card below. Or click the 'Jump to Recipe' button at the top of this post.

Ingredients for Streusel Crumble Mixture.
  • Plain flour - All purpose flour. Some people use Self-Raising flour or add baking powder, but I prefer plain flour.
  • Butter - Unsalted butter straight from the fridge, cut into cubes. This makes it easier when rubbing in using your fingertips or blitzing with the food processor.
  • Sugar - I love using soft brown sugar as it gives a slight nutty flavour, but you can use caster sugar if you wish.
  • Oats - I find that Porridge Oats work best for the crumbles I make. If you only have jumbo oats, blitz them for a few seconds in a food processor. Tip. Omit if making plain crumble topping
  • Nuts - Mixed chopped nuts. Pecans and other similar nuts are fine. Tip: Omit if making a plain crumble topping.

Method

Crumble mixture in a food processor.

Step 1: Place the flour, butter and sugar into a food processor. Blitz until the mixture resembles fine breadcrumbs.

Crumble topping in a large glass bowl.

Or use your finger tips to rub the butter and flour together until you have the same breadcrumb consistency.

Crumble topping with oats and nuts in a large mixing bowl being mixed with a spoon.

Step 2: Add the chopped mixed nuts and oats. Mix until everything is well combined.

Filling a large freezer bag with crumble mixture.

Step 3: Fill a large freezer bag with the homemade crumble mixture.

Large bag on streusel crumble mixture.

Flatten the freezer bag, add a label and place it in the Freezer.

How to make a basic Crumble Topping without Oats and Nuts

Omit the Oats and Nuts and follow Steps 1 and 3 with only the flour, butter and sugar.

How Much Crumble Mix is Needed by Dish Size

This is a general guide as to how much crumble topping you will need for individual small or large pies and crumbles.

  • Individual small pies - 40g - 50g approx 2 rounded tablespoons for each pie
  • Large Apple Crumble or 2 medium size Apple Crumbles 300g of ready made crumble mixture.

Storage.

  • Fridge: Homemade Crumble Mixture with or without nuts can be made in advance and stored in the fridge for several days. But if you do not intend to use it for some time, ideally it's best to freeze it.
  • Freezer: Place the crumble mixture in a suitable freezer bag or container and place it in the fridge. Take out what you need when you are day to bake.

When you are ready to make a crumble, take out the amount of homemade crumble mixture that you need. There is no need to thaw and add it to any stewed fruit or mince pies for a delicious dessert crumble topping. Then bake as per the recipe you are using.

FAQ and Tips

  • To make a smaller batch of crumble mix, use half the quantities
  • Omit the Oats and nuts to make a plain crumble topping
  • If you only have Jumbo Oats, bliz them in a food processor for a few seconds
What is the difference between Streusel and Crumble Topping?

A Streusel topping often contains the addition of chopped mixed nuts and oats. A basic crumble topping contains flour, butter and sugar that melts into the fruit.

Why Isn't My Crumble Topping Crumbly?

To make a crunchy crumble topping, try using the rubbing in method with your fingertips and avoid using a food processor, which makes the crumble topping finer.

What is a Streusel Topping Made Of?

A streusel mixture consists of flour, butter, sugar, oats, and chopped nuts, with the option of adding spices for extra flavour.

Large Bag of Streusel Topping with Oats an nuts

Streusel Crumble Topping with Nuts

LynnH
Save time in the kitchen with this homemade large batch of fruit crumble topping recipe.
Print Recipe
Prep Time 15 minutes mins
Total Time 15 minutes mins
Course Dessert
Cuisine British

Equipment

  • Freezer Bag

Ingredients
  

  • 300 g plain flour
  • 150 g butter from the fridge
  • 100 g soft brown sugar
  • 90 g Porridge Oats
  • 90 g chopped mixed nuts

Instructions
 

  • Step 1: Place the flour, butter and sugar into a food processor. Blitz until the mixture resembles fine breadcrumbs. Or use your finger tips to rub the butter and flour together until you have the same breadcrumb consistency.
  • Step 2: Add the chopped mixed nuts and oats. Mix until everything is well combined.
  • Step 3: Fill a large freezer bag with the homemade crumble mixture. Flatten the freezer bag, add a label and place it in the Freezer.

How to make a basic Crumble Topping without Oats and Nuts

  • Omit the Oats and Nuts and follow Steps 1 and 3 with only the flour, butter and sugar.

Notes

Storage.
Fridge: Homemade Crumble Mixture with or without nuts can be made in advance and stored in the fridge for several days. But if you do not intend to use it for some time, ideally it's best to freeze it.
Freezer: Place the crumble mixture in a suitable freezer bag or container and place it in the fridge. Take out what you need when you are day to bake.
When you are ready to make a crumble, take out the amount of homemade crumble mixture that you need. There is no need to thaw and add it to any stewed fruit or mince pies for a delicious dessert crumble topping. Then bake as per the recipe you are using.
FAQ and Tips
  • To make a smaller batch of crumble mix, use half the quantities
  • Omit the Oats and nuts to make a plain crumble topping
  • If you only have Jumbo Oats, blitz them in a food processor for a few seconds
What is the difference between Streusel and Crumble Topping?
A Streusel topping often contains the addition of chopped mixed nuts and oats. A basic crumble topping contains flour, butter and sugar.
Why Isn't My Crumble Topping Crumbly?
To make a crunchy crumble topping, try using the rubbing in method with your fingertips and avoid using a food processor, which makes the crumble topping finer.
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