FOR THE GLAZE (OPTIONAL):
1/2 cup powdered sugar
2-3 tablespoons milk
1/2 teaspoon pure vanilla extract
PREPARATION:
1st Step
To begin, preheat the oven to 350 degrees Fahrenheit (175 degrees Celsius). Prepare a 9-by-9-inch baking pan by greasing and flouring it, or lining it with parchment paper.
2nd Step
Mix the sugar, flour, butter pieces that have been refrigerated, and cinnamon in a small basin. To make a crumbly mixture, use a pastry cutter or your fingers to combine the ingredients. Make the streusel topping and put it aside.
3rd Step
To make the dry ingredients, combine all-purpose flour, baking powder, baking soda, and salt in a medium basin and whisk until smooth. Put this dry ingredients combination aside for now.
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