Blueberry Jam Cake Bars
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  • 2 1/4 cups AP flour
  • 1 1/4 cups sugar, divided
  • 1 1/2 tsp baking powder
  • 1 tsp salt
  • 2 1/2 tsp ground cinnamon, divided
  • 3/4 cup butter, melted
  • 1/4 cup sour cream, room temperature
  • 2 tsp vanilla extract
  • 1 egg
  • 1/2 cup blueberry jam
  • Glaze
  • 3/4 cup (86g) powdered sugar
  • 1-2 tbsp milk
  • 1/2 tsp vanilla extract


  1. Preheat oven to 350°F. Line a 9-inch square baking pan with aluminum foil or parchment paper.
  2. Combine flour, 1 cup of sugar, baking powder, salt and 1 teaspoon of cinnamon in a large mixer bowl. Set aside.
  3. Whisk together melted butter and sour cream in another medium sized bowl.
  4. Add vanilla extract and egg to the butter mixture and whisk until well combined.
  5. Add wet ingredients to dry ingredients and beat until well combined.
  6. Spread about half of the batter into the bottom of the prepared pan.
  7. Spread the blueberry jam into an even layer on top of the batter.
  8. Crumble the remaining batter and drop over the blueberry jam, forming an even layer.
  9. Combine remaining 1 1/2 teaspoons of cinnamon and 1/4 cup of sugar in a small bowl, then sprinkle over the top of the batter.
  10. Bake bars for 20-25 minutes, then remove from oven to cool completely before drizzling glaze over bars.