This Lemon Coffee Cake is bursting with flavor from lemon zest and juice. It’s even topped with a lemony crumb streusel. Lemon lovers will adore this breakfast cake!

Thick slice of lemon coffee cake on a plate dusted with powdered sugar and a slice of lemon on top.

Lemon Coffee Cake

I altered my favorite blueberry crumb cake recipe and made it lemon flavored. The fine, moist crumb of this lemon coffee cake melts in your mouth, while the lemon infused crumble on top adds a slight crunch and boost of flavor.

It’s simple to make and works great for breakfast, brunch, afternoon tea, or dessert.

Lemon coffee cake in pan with crumb topping dusted with powdered sugar.

Coffee Cake vs Crumb Cake

Is crumb cake the same as coffee cake? Yes. Crumb cake simply has more streusel on top, whereas some coffee cakes may not have crumbs at all.

Still, I think most people associate that streusel-topped cake with either name, so I use them interchangeably.

Thick slice of lemon coffee cake on a plate dusted with powdered sugar and a slice of lemon on top.

Make the Lemon Streusel Topping

When making coffee cake or any other crumb cake, I like to make the streusel topping first, so it’s ready-to-go as soon as the cake batter is made.

*Full recipe and instructions are in the printable recipe card at the end of the post.

Making lemon streusel topping.

To make the lemon streusel topping:

  • Place butter in a microwave safe bowl. Cover the bowl with a plate and heat for 30-60 seconds in the microwave, until the butter is melted. Add the flour, sugar, lemon zest, and lemon juice.
  • Mix with a fork to combine. Mixture will be clumpy. Chill streusel in the refrigerator until ready to top the cake.

Cold vs Melted Butter in Streusel – A typical streusel is made by cutting cold butter into the dry ingredients. Because I wanted the lemon juice to mix completely with the other ingredients, I used melted butter to help distribute it.

Simply refrigerating the prepared streusel until assembling the cake helps the melted butter firm back up. This helps the streusel keep its shape during baking, so that it doesn’t dissolve entirely into the cake.

Make the Lemon Cake Batter

After the streusel is made and chilling, it’s time to make the lemon cake batter.

  • Preheat the oven to 375 degrees Fahrenheit. Grease a 9×9-inch square baking pan. (I like to use Baker’s Joy.) Set pan aside.
Sifting dry ingredients.
  • Sift the flour, baking powder, and salt into a large bowl. Set aside.
Steps to make lemon cake batter.
  1. In a stand mixer with the paddle attachment, cream the butter, sugar, and lemon zest together until light and fluffy.
  2. Incorporate the eggs, one at a time.
  3. Then mix in the vanilla.
  4. Add half the dry ingredients. Mix on low until just incorporated.
  5. Add all of the buttermilk and lemon juice. Mix on low until just incorporated.
  6. Add the remaining dry ingredients. Mix on low until just incorporated. Do not over-mix.

Assemble the Lemon Crumb Cake

Collage. Lemon cake batter in pan. Then with crumbs sprinkled on top.
  • Spread the cake batter evenly into the prepared pan.
  • Remove the crumb topping from the fridge and use your fingers to break up the streusel while sprinkling it evenly over the top of the cake batter. Keep some bigger clumps.

Baking and Serving

Close up of crumb topping on top of lemon coffee cake.
  • Bake the lemon coffee cake at 375˚F for 40-45 minutes or until the cake springs back (doesn’t jiggle) when touched in the center. Do not over-bake. (You may try using a toothpick to test the center, but the streusel may scrape off any wet batter when lifted out of the cake. I recommend carefully doing the jiggle test with your fingers.)
  • Allow the lemon coffee cake to cool, at least partially, before cutting and serving it. Dust the cake with powdered sugar or make a lemon glaze of powdered sugar and lemon juice to drizzle over the top.
  • Store cake covered tightly in the pan with foil or plastic wrap. Alternately transfer cake to an airtight container and store at room temperature up to 5 days. Nuke leftovers for 10-15 seconds in the microwave to soften the cake back up.
  • Freeze slices of cake wrapped in plastic and placed inside of a freezer-safe zip-top bag for up to 3 months.
Plated slice of lemon coffee cake.

More Lemon Desserts

If you loved this lemon crumb cake, then you might also like these lemon desserts:

If You Make This Recipe, Please Rate and Review it in the Comments Below. THANKS!

Thick slice of lemon coffee cake on a plate dusted with powdered sugar and a slice of lemon on top.

Lemon Coffee Cake

This Lemon Coffee Cake is bursting with flavor from lemon zest and juice. It’s even topped with a lemony crumb streusel. Lemon lovers will adore this breakfast cake!
4.41 from 47 ratings

Ingredients

Lemon Streusel:

  • 4 Tbsp (57 g) butter, melted
  • 1 cup (120 g) all-purpose flour, stir, spoon & level
  • cup (68 g) granulated sugar
  • 1 Tbsp lemon zest, no white pith (about 1 lemon)
  • 1 Tbsp lemon juice

Lemon Cake:

  • 2 cups (240 g) all-purpose flour, stir, spoon & level
  • 2 tsp baking powder
  • ½ tsp salt
  • ½ cup (113 g) butter, (1 stick); room temperature/softened
  • 1 cup (200 g) granulated sugar
  • 2 Tbsp lemon zest, no white pith (about 2 lemons)
  • 2 large eggs, room temperature
  • 1 tsp vanilla extract
  • ¾ cup (177 ml) buttermilk, room temperature
  • ¼ cup (59 ml) lemon juice, room temperature

Instructions
 

  • Preheat the oven to 375℉. Grease a 9×9-inch square baking pan. (I like to use Baker’s Joy.) Set pan aside.
  • STREUSEL: Place butter in a microwave-safe bowl. Cover the bowl with a plate and heat for 30-60 seconds in the microwave, until the butter is melted. Add the flour, sugar, lemon zest, and lemon juice. Mix with a fork to combine. Mixture will be clumpy. Chill streusel in the refrigerator until ready to top the cake.
  • CAKE BATTER: Sift the flour, baking powder, and salt into a large bowl. Set aside.
  • In a stand mixer with the paddle attachment, cream the butter, sugar, and lemon zest together until light and fluffy. Incorporate the eggs, one at a time. Then mix in the vanilla.
  • Add half the dry ingredients. Mix on low until just incorporated. Add all of the buttermilk and lemon juice. Mix on low until just incorporated. Add the remaining dry ingredients. Mix on low until just incorporated. Do not over-mix.
  • ASSEMBLY: Spread the cake batter evenly into the prepared pan. Remove the crumb topping from the fridge and use your fingers to break up the streusel while sprinkling it evenly over the top of the cake batter. Keep some bigger clumps.
  • Bake the lemon coffee cake at 375℉ for 40-45 minutes or until the cake springs back (doesn’t jiggle) when touched in the center. Do not over-bake. (You may try using a toothpick to test the center, but the streusel may scrape off any wet batter when lifted out of the cake. I recommend carefully doing the jiggle test with your fingers.)
  • Allow the lemon coffee cake to cool, at least partially, before cutting and serving it. Dust the cake with powdered sugar or make a lemon glaze of powdered sugar and lemon juice to drizzle over the top.

Video

Notes

  • Store cake covered tightly in the pan with foil or plastic wrap. Alternately transfer cake to an airtight container and store at room temperature for up to 5 days. Nuke leftovers for 10-15 seconds in the microwave to soften the cake back up.
  • Freeze slices of cake wrapped in plastic and placed inside of a freezer-safe zip-top bag for up to 3 months.
Serving: 1 slice, Calories: 340kcal, Carbohydrates: 64g, Protein: 7g, Fat: 7g, Saturated Fat: 4g, Polyunsaturated Fat: 2g, Cholesterol: 56mg, Sodium: 336mg, Fiber: 1g, Sugar: 31g
Disclaimer: Nutritional values were calculated using a third-party tool and are provided as an estimation only.