Lemon Blueberry Sour Cream Crumb Bars

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Delicious crumb bars bursting with fresh blueberries and a hint of lemon!

Lemon Blueberry Sour Cream Crumb Bars stacked on top of one another.
Moving is such a hard thing to do. Me and the hubby have been going non stop for two weeks. Luckily I have been pulling the, “I can’t lift anything” card or I wouldn’t have survived. We have gotten pretty settled into the new place and absolutely love it. And today we celebrated our anniversary. It started in the morning with getting my tire replaced that had a nail in it. Life huh? But then it was so nice to take a break and get a relaxing massage and go out to a nice French Restaurant. It was fun to hear my hubby speak french and tell me stories of his mission in France while we were there. It was great to have a break for a while and enjoy the day with him.

But anyway. Enough about my life. Lets talk about how bomb diggity these bars turned out! This is my favorite recipe for crumb bars. They have such a great shortbread like base to them. But the crumb topping is perfect. It is the perfect crumb consistency and it just melts in your mouth. I decided to add fresh blueberries, and the sweet sour cream takes these bars to a whole different delicious level. These almost didn’t make it to the photoshoot, I was eating them like a starving pregnant woman! They were one of the best treats that I had had!

Lemon Blueberry Sour Cream Crumb Bars

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Delicious crumb bars bursting with fresh blueberries and a hint of lemon!
Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes
Author Alyssa Rivers
Servings: 8 Bars



  • 1/2 cup butter melted and cooled to room temperature
  • 1/2 cup light brown sugar
  • 1 1/2 cup all purpose flour
  • 1/2 tsp baking soda
  • 1/2 tsp baking powder
  • 1/4 tsp salt


  • 2 cups blueberries fresh
  • 3/4 cup sugar
  • 2 teaspoons cornstarch
  • 1 Tablespoon lemon juice
  • 1/2 cup sour cream
  • 1/4 cup granulated sugar
  • 1 Tbsp all purpose flour
  • 1 egg
  • 1/2 tsp vanilla extract


  • Preheat oven to 375 and prepare an 8×8 square pan by lining with parchment paper and spraying with cooking spray.
  • Make the crust by whisking together in a medium bowl the flour, brown sugar, baking soda, baking powder and salt. Add the melted butter. The dough will be crumbly but make sure all of the butter is incorporated.
  • Reserve ¾ cup of the crust and press the remaining into the bottom of your 8×8 prepared baking pan.
  • Combine the fresh blueberries, sugar, cornstarch, and lemon juice in a small bowl until the combined and set aside.
  • For the sour cream filling, mix together in a large bowl the sour cream, sugar, 1 Tbsp flour, egg, and vanilla. Pour over the crust in your 8×8 pan.
  • Spoon the fresh blueberry mixture evenly over the sour cream.
  • Sprinkle your reserved ¾ cup crust over the top and bake for 25-28 minutes or until golden brown. Cool completely and serve into squares. Store in the refrigerator up to 3 days.


Serves: 8

Calories400kcal (20%)Carbohydrates64g (21%)Protein4g (8%)Fat15g (23%)Saturated Fat9g (45%)Cholesterol58mg (19%)Sodium277mg (12%)Potassium131mg (4%)Fiber2g (8%)Sugar43g (48%)Vitamin A494IU (10%)Vitamin C4mg (5%)Calcium53mg (5%)Iron1mg (6%)

All nutritional information is based on third party calculations and is only an estimate. Each recipe and nutritional value will vary depending on the brands you use, measuring methods and portion sizes per household.

Course Dessert
Cuisine American
Keyword crumb bar recipes, lemon blueberry sour cream crumbs bars
Tried this recipe?Mention @alyssa_therecipecritic or tag #therecipecritic

Alyssa Rivers

I am Alyssa and the blogger behind The Recipe Critic. I started my blog in June of 2012 as a place to share my passion for cooking. I love trying new things and testing them out with my family.

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  1. Hi I would like to make these for a party but how far in advance can they be made and stored for ?? They look awesome , can’t wait to make them, THANKS for the recipe !!

  2. i made theses this past week for company and they were a hit! I used half raspberries and half blueberries, since I had both. Will definitely make these again. I cut them into 18 bars and found this to be a good serving size. 5 stars

  3. These are delicious! I added 1 tsp. lemon peel to the sour cream mixture. I also baked the crust at 350 degrees for about 15 minutes before adding the other ingredients. Thank you for this recipe!

  4. Can’t write to much, as I’m in a desert coma. Made these this morning, let cool and chilled in fridge for the day, and all I know is if I make these again I don’t know how I’m going to let them cool completely without digging In. Fantastic. Even more fantastic with my favourite vanilla ice cream. Thank you for this recipe.

  5. I would like to make this for a crowd in a sheet pan (or jelly roll pan I think they are called). Has anyone tried doubling or tripling this recipe and baking it in a sheet pan? I might just give it a whirl but if anyone has tried it let me know. Looks delicious!!

  6. This bar is like a pie that meets a cheesecake that meets a crisp…it’s very good!!! They definitely need to be served very cold. I used frozen balckberries in replace of the blueberries! The lemon isn’t really strong. If you like lemon I would suggest adding zest to the crust and finishing the whole pan off with coarse salt and lemon. I will definitely make this again!!!

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