This recipe is from Kate McAloon (altered just a tad)

2 cups butter-room temperature
1 cup white sugar
1 cup brown sugar
4 eggs
4 teaspoons vanilla
4 1/2 cups all-purpose flour
1 tablespoon sea salt
1/4 tsp. baking powder & 1/2 tsp. baking soda
1 tablespoon organic culinary lavender
2 cups shredded coconut
1 1/2 cups white chocolate chips
1 1/2 cups small marshmallows
-using an electric mixer combine butter, white sugar & brown sugar together until creamy.
-add vanilla and eggs 1 at a time and mix in well.
-in a separate bowl mix together flour, salt, baking soda and powder, and culinary lavender
-then add the flour mixture to the batter slowly and mix well.
-add the shredded coconut, white chocolate chips and marshmallows and blend together.
-put the mixture in a medium to large baking pan sprayed with cooking spray.
-bake at 350 for about 20-25 min. then check and cover Lavender Blondies loosely with foil so the top does not burn and continue baking until the insides are a bit firm for about 15-20 minutes more.
The middle will still be gooey when done. Enjoy!