Preheat oven to 325°. Cream butter, brown sugar and vanilla. Add eggs, one at a time, beating well after each addition. Combine next five ingredients; add to creamed mixture and mix well. Stir in coconut.
Shape into 1-in. balls. Place 2-1/2 in. apart on greased baking sheets (cookies will spread). Place pecan half in the center of each cookie and push down slightly. Bake 14-16 minutes.
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