Go Back

Strawberry Rhubarb Squares

Delicious squares made with garden fresh rhubarb and strawberries with a shortbread crust and an oatmeal topping.1
Print Recipe Pin Recipe
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Course Baking, Dessert, desserts
Cuisine American
Servings 16 squares

Equipment

  • 1 9X9" square baking pan

Ingredients
  

For the Base:

  • ½ cup granulated sugar
  • 2 cups all-purpose flour
  • 1 Tbsp baking powder
  • ⅔ cup salted butter at room temperature
  • 1 lg egg

for the Rhubarb filling:

  • 2.0 cups rhubarb, diced
  • 1.5 cups Fresh strawberries, sliced into quarters
  • ⅓ cup granulated sugar
  • 1 lg lemon, zest and juice
  • 2½ tsp cornstarch

For the Topping:

  • 1 cup Old Fashioned rolled oats (not quick oats)
  • ½ cup granulated sugar
  • 1 tsp Vanilla Sugar
  • ½ cup butter, melted

Instructions
 

For the Base:

  • Preheat oven to 400℉
  • spray or grease a 9x9" square baking pan and set aside
  • Combine the ½ cup granulated sugar, 2 cups all-purpose flour, 1 Tbsp baking powder and a pinch of salt and then using your fingers add the softened butter and combine with the dry ingredients until there are no lumps. Add the egg and stir until a dough forms.
  • Cover the bottom of the prepared pan with the dough in an even, thick layer making sure to cover the entire bottom surface.

For the Strawberry Rhubarb filling:

  • In a small saucepan heat the 3.5 cups rhubarb and strawberries, ⅓ cup granulated sugar, lemon zest and lemon juice on medium heat until bubbly. Lower the heat and add the 2½ tsp cornstarchand stir well. Cook for 5 additional minutes until the mixture thickens.
  • Let the mixture cool at least 5 minutes until it is no longer hot. Pour the mixture over the base layer in the pan.

For the Topping:

  • Combine 1 cup Old Fashioned rolled oats (not quick oats), ½ cup granulated sugar, 1 tsp Vanilla Sugar and ½ cup butter, melted. Sprinkle the topping over the rhubarb layer.
  • Bake until the top is slightly golden about 20-25 minutes. Let cool completely before cutting. Enjoy!

Notes

If you find the top is not golden but the squares are bubbling, you can turn the oven to broil for a minute to brown the top,  just make sure to watch it carefully so it doesn't burn the top.
Feel free to make this with just rhubarb or just strawberries, keeping the amount of fruit to 3.5 cups for one batch.  
Keyword rhubarb, squares, strawberry