Lemon Blueberry Crumb Cake

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lemon blueberry crumb cake on plate

Lemon Blueberry Crumb Cake

Have some fresh blueberries and you want some cake? Let’s bake up a lemon blueberry crumb cake. Perfect for summer parties and for days you want to brighten your day with the zest of fresh lemon.

To keep your blueberries from bursting, you can freeze them and make this dish as well. This would keep the beautiful yellow and purple colors separated.

lemon juice measured into bowl

What Ingredients Are Needed to Make This Cake?

  • flour
  • baking powder
  • egg
  • sugar
  • freshly squeezed lemon juice
  • melted butter
  • sour cream
  • blueberries (fresh or frozen)
  • powdered sugar
adding melted butter into bowl

Can I Use Bottled Lemon Juice?

You can use fresh lemon juice or bottled. Whichever you have on hand will work in this recipe.

gently folding blueberries into crumb

Can I Use Frozen Blueberries?

You can use frozen or fresh blueberries when caking this crumb cake. When using fresh, carefully and gently stir them into the batter so they do not break and discolor the batter purple. If you have time, freeze the blueberries and you can stir the batter without turning it purple.

crumb topping mixed together in bowl

What Is In The Crumb Topping?

The crumb topping has melted butter, flour, powder sugar and lemon juice. The butter should not be hot or it will melt the powder sugar.

lemon blueberry crumble before going into oven

What Happens If My Topping Starts To Turn Dark Brown?

This cake takes some time to bake, because of the blueberries. If it is not baked long enough, the middle will sink. If you find the bake getting darker than you want, you can cover with aluminum foil or turn your oven down to 300F.

Turn this cake into muffins instead and serve with delicious blueberry sauce pancakes for breakfast.

baked blueberry crumb cake
lemon blueberry crumb cake on plate
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Lemon Blueberry Crumb Cake

Lemon blueberry crumb cake is a great dish to make for special occasions, family gatherings and those fun parties.
Course: Baking, Dessert
Cuisine: American
Author: Regina Sober



  • 2 cups flour
  • 1 tablespoon baking powder
  • 1 egg
  • 1 cup sugar
  • 1/2 cup freshly squeezed lemon juice about 2 lemon’s worth
  • 1 stick melted butter and cool
  • 1 cup sour cream
  • 2 cups blueberries

Crumb Topping:

  • 3/4 cup powdered sugar
  • 1/2 cup flour
  • 4 tablespoons melted butter
  • 1/2 teaspoon lemon juice



  • Preheat the oven to 350℉ degrees
  • Spray a 8×8 or 9×13 pan with non-stick spray.
  • In a small bowl, add the flour, baking powder and salt and blueberries and mix and set aside.
  • In a large bowl, add the egg and whisk until the egg yolks turn a lighter yellow..
  • Add the sugar into the egg and mix.
  • Add the lemon juice.
  • Add the melted butter (be sure it is cooled and not hot) and mix into the egg and sugar.
  • Add 1/2 the sour cream and mix and then add the remainder and mix.
  • Pour the dry ingredients into the wet gradually and stir until incorporated.
  • Put into the 8×8 dish.

Crumb topping

  • In a bowl mix ingredients together.
  • Crumb topping should become a ball or crumbly.
  • Crumble over the top of the dish all over. (if you use a 9×13 you may want to double the crumb topping recipe to cover more area)
  • Bake for 50-55 minutes or until golden brown and the toothpick comes out clean.
  • Let cool and serve.
Lemon blueberry crumb cake is a great dish to make for special occasions, family gatherings and those fun parties.

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