This easy lemon sugar crumb cake recipe makes a tender 9-inch square cake in about 1 hour, including 20–25 minutes of preparation and 35–42 minutes of baking. The cake is made with fresh lemon zest, lemon juice, sour cream or full-fat Greek yogurt, and a generous layer of chunky butter crumb topping.
Every bite brings together a soft, moist lemon cake, crisp-edged sugar crumbs, and a bright optional lemon glaze. It is simple enough for a weekday bake yet pretty enough for brunch, afternoon tea, showers, birthdays, and dessert tables.
Jump to RecipeWhy You’ll Love This Recipe
This lemon sugar crumb cake has the comfort of a classic coffee cake with the fresh, sunny flavor of a lemon dessert. The cake itself is soft and tender, while the flour-rich topping stays in chunky pieces instead of disappearing into the batter.
Sour cream or full-fat Greek yogurt adds moisture and helps balance the lemon’s acidity. The result is a cake that tastes rich without feeling heavy, with enough sweetness for dessert and enough brightness for breakfast or brunch.
The recipe also uses everyday ingredients and one square baking pan. If you enjoy fruit-forward cakes, you may also like this easy peach cake for another tender, seasonal dessert.
Ingredients You’ll Need
Fresh lemons are the most important flavor ingredient in this recipe. You will use finely grated zest in both the crumb topping and the cake, plus fresh juice in the batter and optional glaze.
- For the crumbs: all-purpose flour, granulated sugar, lemon zest, salt, and melted unsalted butter.
- For the cake: all-purpose flour, baking powder, baking soda, salt, softened butter, granulated sugar, room-temperature eggs, lemon zest, lemon juice, vanilla, and sour cream or full-fat plain Greek yogurt.
- For the glaze: powdered sugar and 1 1/2 to 2 tablespoons of fresh lemon juice, if desired.
Measure the flour carefully, preferably by weight or by gently spooning it into a measuring cup and leveling the top. Too much flour can make the cake dense and can make the topping less pleasantly crumbly.
How to Make It Step-by-Step
Step 1: Heat the oven to 350°F (175°C), then grease an 8-inch or 9-inch square pan. Line it with parchment paper, leaving enough paper over the sides to help lift the cake out after cooling.
Step 2: Prepare the lemon crumb topping first so it is ready when the batter is mixed. Whisk together 1 cup flour, 1/2 cup sugar, lemon zest, and salt, then stir in the melted, slightly cooled butter until large, irregular crumbs form.
Step 3: In a clean bowl, whisk together the 1 1/2 cups flour, baking powder, baking soda, and salt for the cake. Keeping the dry mixture separate makes it easier to distribute the leaveners evenly without overmixing the finished batter.
Step 4: Beat the softened butter and 3/4 cup granulated sugar for about 2–3 minutes, until the mixture looks pale and fluffy. For a stronger lemon aroma, rub the lemon zest into the sugar with your fingertips before adding it to the butter.
Step 5: Add the room-temperature eggs one at a time, beating after each addition. Mix in the lemon zest, fresh lemon juice, and vanilla extract until the mixture smells fragrant and looks evenly blended.
Step 6: Add the dry ingredients in two additions, alternating with the sour cream or Greek yogurt. Mix only until no obvious streaks of flour remain, because excessive mixing can reduce the cake’s tender texture.
Step 7: Spread the batter evenly in the prepared pan, using a spatula to reach the corners. Scatter the crumb topping over the entire surface and press a few larger pieces lightly into the batter so the topping stays attached as the cake bakes.
Step 8: Bake for 35–42 minutes, checking the cake near the end of that range. The center should be set, and a toothpick inserted into the cake portion should come out clean or with a few moist crumbs; avoid testing only the crumb topping.
Step 9: Let the cake cool in the pan for at least 20 minutes, then continue cooling before glazing or slicing. If making the glaze, whisk the powdered sugar with 1 1/2 to 2 tablespoons lemon juice and drizzle it over the cooled cake.
How to Get Chunky, Buttery Crumbs
The topping is intentionally flour-heavy, which helps it remain chunky instead of melting into a thin layer. Stir the melted butter in gradually and stop once the mixture forms irregular clumps; do not mash it into a smooth paste.
For a bakery-style appearance, make some crumbs small and others generously sized. Scatter them evenly, then press only a few into the batter so the finished surface has both crisp exposed pieces and crumbs nestled into the cake.
Allowing the butter to cool slightly before mixing is helpful. Very hot butter can make the topping greasy and may encourage the sugar to dissolve too quickly.
Read More: a creamy pineapple cake
Fresh Lemon Flavor Tips
Lemon zest provides most of the cake’s aroma, while lemon juice brings acidity and a clean citrus tang. Since juice alone gives a less pronounced lemon flavor, use a fine grater or microplane and zest the lemons before squeezing them.
Rub the zest into the granulated sugar with your fingertips for several seconds. This releases the lemon oils into the sugar and distributes that fragrance throughout the butter-based batter.
Use fresh juice for both the cake and glaze. Bottled juice may work in a pinch, but fresh lemon gives the brightest flavor and a more appealing finish.
Serving Suggestions
Serve the cake in generous squares with coffee, tea, or a cold glass of milk. The lemon glaze adds extra sweetness and a glossy finish, but the cake is delicious without it when you want the crumb topping to remain the main attraction.
For a simple dessert plate, add a spoonful of softly whipped cream or a few fresh berries. Keep the presentation light so the golden crumbs and fine lemon zest remain visible.
This recipe is also a lovely choice when you want a fruit-inspired dessert without making a pie. For a richer chocolate option on another day, try this chocolate poke cake.
Storage and Make-Ahead Advice
Cool the cake completely before covering it. Store it in an airtight container at room temperature for up to a few days, or refrigerate it if your kitchen is especially warm.
The crumb topping firms as it cools, which is why slicing too early can make the center appear underbaked. For the cleanest pieces, wait until the cake is fully cool and use a sharp knife with a gentle sawing motion.
If you enjoy preparing desserts ahead, glaze individual pieces just before serving rather than glazing the entire cake in advance. The topping will stay more defined, and each slice will have a fresh lemon finish.
Read More: an easy no-bake pudding dessert
Easy Lemon Sugar Crumb Cake
Ingredients
Method
- Heat the oven to 350°F (175°C). Grease an 8-inch or 9-inch square baking pan and line it with parchment paper, leaving a little overhang for lifting the cooled cake.
- Make the crumb topping by whisking together the flour, sugar, lemon zest, and salt. Stir in the melted, slightly cooled butter until large, irregular crumbs form, then set the mixture aside.
- Whisk the cake flour, baking powder, baking soda, and salt in a separate bowl. In another bowl, beat the softened butter and granulated sugar for 2–3 minutes, until pale and fluffy.
- Beat in the eggs one at a time, making sure each is incorporated before adding the next. Mix in the lemon zest, fresh lemon juice, and vanilla extract.
- Add the dry ingredients in two additions, alternating with the sour cream or Greek yogurt. Mix only until combined, taking care not to overmix the batter.
- Spread the batter evenly in the prepared pan. Scatter the lemon crumb mixture over the surface, pressing a few pieces lightly into the batter.
- Bake for 35–42 minutes, until the center is set and a toothpick inserted into the cake portion comes out clean or with a few moist crumbs. An 8-inch pan usually needs the longer end of the baking range, while a 9-inch pan may finish several minutes sooner.
- Cool the cake in the pan for at least 20 minutes. For the glaze, whisk the powdered sugar with 1 1/2 to 2 tablespoons fresh lemon juice, then drizzle it over the cooled cake before slicing.
Notes
Final Thoughts
This easy lemon sugar crumb cake is a dependable bake when you want bright citrus flavor, a moist homemade crumb, and a generous buttery topping without complicated decorating. Fresh zest, creamy sour cream or Greek yogurt, and careful cooling are the small details that make the finished cake especially delicious.
Make it in an 8-inch pan for a slightly taller cake and use the longer baking time, or choose a 9-inch pan for a somewhat quicker bake. Add the lemon glaze once the cake is cool, slice it into about 9 servings, and enjoy each soft, crumb-covered square.
For another relaxed dessert to keep in your recipe collection, browse this no-bake pineapple pie. Whether served at brunch or after dinner, this lemon cake brings a cheerful homemade finish to the table.