Preheat oven to 350℉. Grease a 9 inch square baking pan.
Puree enough strawberries to make ½ cup of puree. Finely chop remaining berries and set aside.
In a large bowl, cream butter and cream cheese until blended. Add sugar and beat for 1-2 minutes. Add egg and vanilla and beat until combined.
In a medium bowl whisk together 1 cup of flour, baking powder and salt. Gradually add flour mixture to cream cheese mixture and beat until combined.
Separate half of the dough into the medium bowl and add strawberry puree. Mix until combined. Add enough flour until dough is roughly the same consistency as plain half of dough.
Drop heaping tablespoons of dough into a 9 inch square baking pan, alternating strawberry and plain. Top with chopped strawberries.
Press down with wet hands and swirl.
Bake until cookie turns light brown, about 10-15 minutes. Cool, cut into 16 bars.