Spray large pie plate with non-stick cooking spray.
Combine butter, flour, and 3 Tbsp. sugar and press into bottom of pie plate to form crust.
Bake at 375 degrees12 -15 minutes. Cool.
Combine cream cheese, 1/4 c. sugar, and 1/2 tsp. vanilla until smooth.
Spread on top of cooled crust.
Arrange peaches and blueberries as desired.
For glaze (optional):
Bring ingredients to a boil and cook, stirring, 1 minute.
Cool completely.
Top tart with glaze and cool in refrigerator until set.