Easiest Homemade Apple Crisp thus far!

Found on tastebetterfromscratch.com

Made this Tuesday night and it is so so so so gewd. Mmmmm Mmmm !

Topping

1/2 cup flour

1/2 cup old fashioned oats
1/2 cup brown sugar
1/2 tsp baking powder
1/4 tsp ground cinnamon
dash of salt
1/3 cup unsalted butter, diced into small chunks

Filling
3-4 large Granny Smith apples, peeled and sliced thin
3 Tbsp butter, melted
2 Tbsp flour
1 Tbsp lemon juice
3 Tbsp milk
1/2 tsp vanilla extract
1/4 cup brown sugar
1/2 tsp ground cinnamon
dash of salt

Instructions
Preheat oven to 375 degrees F.
In a medium size bowl combine the crumb topping ingredients with a fork or pastry blender until it resembles small crumbs. Refrigerate while you prepare the apple filling.
For the Apple Filling

In a small bowl, combine melted butter and flour until well blended. Add lemon juice, milk and vanilla and stir well. Stir in brown sugar, cinnamon, and salt. Pour butter mixture over apples and toss to coat. Pour apple mixture into an 8x8-inch baking dish and spread into an even layer. Sprinkle crumb topping evenly over the apples. Bake for 30-35 minutes or until golden brown and top is set. Remove from oven and allow to cool for at least 10 minutes before serving.