Making Heavenly Summer Peach Bars is a seamless process. Just follow these steps:

1. Preheat your oven to 350°F (175°C). Grease and line an 8×8-inch baking pan with parchment paper.
2. Prepare Peaches: In a bowl, toss the sliced peaches with lemon juice and 1 tablespoon of sugar. Set aside to marinate.
3. Combine Dry Ingredients: In a medium bowl, whisk together the flour, baking powder, salt, and cinnamon. Set aside.
4. Cream Butter and Sugar: In a large bowl, beat the softened butter and ¾ cup sugar together until light and fluffy.
5. Add Eggs and Vanilla: Beat in the eggs, one at a time, followed by the vanilla extract until combined.
6. Mix Together: Gradually add the dry ingredients to the butter mixture, stirring until just combined.
7. Spread Half the Dough: Press half of the dough into the prepared baking pan evenly to form the base.
8. Add Peaches: Layer the marinated peaches evenly over the dough.
9. Top with Remaining Dough: Drop spoonfuls of the remaining dough over the peaches. It doesn’t need to cover completely.
10. Bake: Bake in the preheated oven for 35-40 minutes, or until the top is golden and a toothpick comes out clean.
11. Cool the Bars: Allow the bars to cool in the pan for about 15-20 minutes. Then, lift them out using the parchment paper and allow to cool completely on a wire rack.
12. Dust with Powdered Sugar: Once cooled, sprinkle powdered sugar on the top before cutting into squares.

These steps will make your Heavenly Summer Peach Bars a delicious treat everyone will love!