1Heat oven to 350°F. Spray 8- or 9-inch square pan with cooking spray.
2In large bowl, beat butter and brown sugar with electric mixer on medium speed about 3 minutes or until light and fluffy. Beat in Bisquick mix, scraping bowl occasionally, until blended. Evenly pat dough in pan.
3Bake 25 to 35 minutes or until golden brown.
4Remove from oven and immediately sprinkle with chocolate chips. Let stand 2 minutes; spread chocolate over bars. Sprinkle with coconut and pecans, pressing lightly to adhere to chocolate. Cool completely, about 1 hour 30 minutes. Cut into 4 rows by 4 rows.