Can I use banana bread-style loaf pans instead of an 8x8?

Yes—bake in a 9×5 in (23×13 cm) loaf pan for 55–70 minutes. Tent with foil if the crumble browns too fast.

How do I stop the crumble from sinking?

Keep the batter fairly thick, don’t overmix, and gently press the streusel so it adheres. Make sure the oven is fully preheated.

Can I make this with less sugar?

You can reduce the cake sugars by 15–20% without affecting structure. Keep at least 20–25 g sugar in the crumble for texture.

Oil vs butter in the batter—what’s best?

Oil gives a moister crumb and stays soft when chilled; melted butter adds richer flavour. Use the same weight/volume.

Can I add nuts or chocolate?

Absolutely. Fold in 80–100 g chopped walnuts or pecans, or 100–120 g chocolate chips after mixing the batter.

How do I make it gluten-free?

Use a 1:1 gluten-free baking blend. If it contains no gums, add ¼ tsp xanthan gum to the batter for better structure.

Can I use whole wheat flour?

Swap up to 30–40% of the flour for whole wheat; add 1–2 tbsp milk if the batter seems too thick.

How ripe should the bananas be and how much by weight?

Very ripe (speckled/brown). Use 500 g peeled banana as listed—measure by weight for consistent results.

Storage and freezing?

Store airtight at room temp 1–2 days or refrigerated up to 5 days. Freeze slices well-wrapped for up to 2 months.

Can I make cupcakes instead?

Yes—divide among 12 muffin cups, top with crumble, and bake at 180°C/350°F for 20–25 minutes until set.

Banana Crumble Cake

Name: Banana Crumble Cake
Prep time: 15 min
Cook time: 55 min
Total time: 1 h 10 min
Yield: 10
Ingredients: 500 g banana (peeled and ripe); 50 g white sugar; 110 g brown sugar; 120 g vegetable oil; 240 g all-purpose flour (sifted); 2 tsp baking soda; 0.5 tsp salt; 125 g butter (room temperature); 150 g all-purpose flour; 25 g sugar; 0.5 tsp cinnamon powder

Bananas and crumble are an easy combination when you want something a little more structured than banana bread but still simple enough for an everyday bake. The cake stays soft from the ripe fruit, while the topping adds a buttery layer that gives each slice more texture.

The batter comes together quickly and does not need elaborate mixing. Once the dry ingredients are folded in, the main job is to spread the batter evenly and scatter the crumble so it bakes into a lightly crisp top instead of sinking.

This is the kind of cake that works across the day: warm with coffee in the morning, sliced for snacks in the afternoon, or served plain for dessert. If you have extra-ripe bananas on the counter, it is an especially practical bake.

What Helps The Crumble Stay Distinct

Soft butter works best when you want a topping that bakes into pebbly clusters instead of melting flat. If your kitchen is warm, chill the crumble briefly before topping the batter.

The bananas also matter here. The riper they are, the sweeter and softer the cake will be, which means you get more flavor without needing extra work in the mixing bowl.

Serving And Storage Notes

Let the cake cool enough for the crumb to set before slicing. It is especially good with coffee, tea, or a spoonful of plain yogurt alongside.