Blueberry Oat Squares - Starbucks Copycat

"These wholesome bars are just like Starbucks blueberry squares (if not better!) My favorite thing about this recipe is the oatmeal base/crumble topping. It is so versatile and makes enough for a generous amount on the top and bottom because c'mon... isn't that everyone's favorite part?! I use this same oatmeal crust recipe with a multitude of different fillings, including swapping strawberries for the blueberries."
 
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photo by lilsweetie photo by lilsweetie
photo by lilsweetie
photo by Elisabeth M. photo by Elisabeth M.
photo by Susan H. photo by Susan H.
photo by DbKnadler photo by DbKnadler
Ready In:
1hr 5mins
Ingredients:
10
Yields:
24 squares
Serves:
24
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ingredients

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directions

  • Filling: In saucepan, bring blueberries, sugar and orange juice to boil; reduce heat and simmer until tender, about 10 minutes. Whisk in cornstarch and boil, stirring, until thickened, about 1 minute. Place plastic wrap directly on surface; refrigerate until cooled, about 1 hour or up to 1 day before using.
  • Base/Topping: In a large bowl, stir together the oats, flour, brown sugar, salt and baking soda. Cut in the butter to form a crumbly mixture. Reserve 1 1/2 cups of the crumbs, and pat the rest evenly into the bottom of a greased 9 x 13 inch pan.
  • Spread the blueberry mixture over the base. Crumble the reserved amount of the base/topping over the blueberry mixture.
  • Bake at 350 degrees F until light golden, about 40-45 minutes. Let cool completely on rack as these cut better when they are fully set. (Make-ahead: Cover and refrigerate for up to 2 days or overwrap with heavy-duty foil and freeze for up to 2 weeks.).

Questions & Replies

  1. Hi, Once it’s baked, is it okay to leave it in room temperature for maybe 1 week max? Or do I have to put it in the fridge? Thank you!
     
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Reviews

  1. Ex starbucks barista. The orange juice is gross. I substituted it for water and vanilla extract with a splash of lemon juice. I added an extra cup of oats and half cup of flour for crust...the butter goes a long way..3/4 cups..and extra blueberries.. 3 bags frozen 12 oz...i eyeballed the cornstarch to preffered thickness. Much better without orange juice. I added cinnamon in the crust too
     
  2. Lovely bars I used almond flour in place of the all purpose flour, used a bit less OJ and added lime juice gave it a great flavor, added more oats and 1/2 C baby cereal since I have some to use up. Everyone loved it am making it again today for church potluck
     
    • Review photo by Elisabeth M.
  3. Husband devouring them! Used frozen blueberries, turned out moist and delicious, definitely make again!
     
  4. This recipe is fantastic. I read other reviews and agree with adding 1.5 more crumbles to the recipe. I added a half a cup of rasphberries to add tartness to the crumble! It is great with spoonful of whip cream or ice cream!
     
  5. My daughter and I tried these at Starbucks and really enjoyed them. She found this recipe and I tried it today. I substituted thawed frozen berries but otherwise followed the recipe exactly. They are absolutely delicious; we both think they are even better than Starbucks and a fraction of the price .
     
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Tweaks

  1. I made the filling with frozen blueberries which worked well. For the topping, I omitted the salt and added in grated, frozen butter along with a tablespoon of peanut butter. Instead of letting it cool and cutting it into bars we had it straight out of the oven like a British crumble with some single cream - very tasty!
     
  2. Made these tonight, but substituted cherry preserves for the blueberry filling. My wife and I<br/>have nearly eaten the whole dish already! As good or better than Starbucks Michigan cherry<br/>oat bars!!
     
  3. One word...Wonderful. I did use lemon juice instead of orange juice and they tasted great.
     

RECIPE SUBMITTED BY

i'm 25 years old and have had a passion for baking ever since i was 9 and baked my first mini whipped cream and fruit filled mini tarts. i am a dessert person all the way and a white chocolate lover. my biggest problem is that i like to bake so much that people around me can't eat fast enough to keep up. i have a baking blog at http://BUTTERCREAMBARBIE.blogspot.com
 
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