Toss it into these zucchini blueberry muffins which also come topped with an oatmeal streusel. Or, maybe raspberry muffins ...

In addition to a homemade crust — made with grated, ice cold butter that creates beautiful pockets of fat when baked — there’s a crumble topping that adds texture and flavor. After all ...

Use about 1 tablespoon of the crumble mixture to top each muffin ... Banana Muffins and want more delicious muffin recipes, ...

Line a 12-hole muffin tin with large or tulip paper cases (or make your own using 15cm/6in squares of baking paper). To make the crumble topping, put the flour, demerara sugar and hazelnuts in a ...

Make the crumble topping. Cut the butter into small chunks ... Combine all the dry ingredients for the muffins, that is the flour, the remaining 75g of caster sugar and the baking powder, together ...