Preheat oven to 350 degrees.
In a large bowl, combine the first six ingredients. Cut in butter until crumbly.
Beat in eggs. Spread in a greased 9-by-13-inch baking pan.
Bake for 8 minutes. Sprinkle coconut over crust; drizzle with milk. Bake 20–25 minutes or longer or until lightly browned.
Meanwhile in a microwave, melt chocolate chips and peanut butter; stir until smooth. Spread over brownies. Cool on wire rack. Cut into bars.
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