Heat oven to 350°F. Grease 9-inch tart pan with removable bottom with shortening or cooking spray. In medium bowl, beat 1/3 cup butter and the powdered sugar with electric mixer on medium speed until blended. Beat in 1/2 cup flour and the cocoa until coarse crumbs form. With floured fingers, press in bottom of tart pan.
Bake 5 to 7 minutes or until set. Meanwhile, in 1-quart saucepan, heat 1/4 cup butter and 4 oz chocolate over low heat 2 to 3 minutes, stirring constantly, until melted and smooth. Set aside to cool.
In large bowl, beat granulated sugar and eggs with electric mixer on high speed 3 to 4 minutes, scraping bowl frequently, or until foamy and light in color. Add sour cream, 2 tablespoons flour and the chocolate mixture; continue beating 1 to 2 minutes, scraping bowl frequently, until well blended. Spread filling over crust.
Bake 20 to 25 minutes or until firm to the touch. Cool 15 minutes. Remove side of pan. Cool completely, about 30 minutes.
In 1-quart saucepan, heat 2 ounces chocolate, 1 tablespoon butter and the honey over low heat 2 to 3 minutes, stirring constantly, until melted and smooth. Spread chocolate mixture over tart. Lightly press fruit around outer edge of tart. Refrigerate until firm, about 1 hour. Let stand at room temperature about 20 minutes before serving.