Peach Pie Bars

Name: Peach Pie Bars
Prep time: 15 min
Cook time: 15 min
Total time: 30 min
Ingredients: 1 1/4 cup all purpose flour; 2 tbsp brown sugar; 1/4 tsp salt; 7 tbsp unsalted butter; 1 egg yolk; 2 1/2 tbsp cold water; 5-6 medium ripe peaches; 3 tbsp all-purpose flour; 1 tbsp cornstarch; 1/3 cup granulated sugar; 2 tsp ground cinnamon; 1 tsp vanilla extract; 1 squirt fresh lemon juice; 1 cup old fashioned oats; 1/2 cup all purpose flour; 2/3 cup brown sugar; 1 tsp ground cinnamon; 1/4 tsp salt; 1/2 cup unsalted butter - cold and cubed