Purple Poke Cake
["1 pkg. white cake mix", "1 (3 oz.) pkg. blackberry gelatin or any flavor", "1 c. boiling water", "1 c. cold water"]
["Prepare cake mix as directed on package, baking in well-greased and floured 13 x 9-inch pan at 350\u00b0 for 30 to 35 minutes.", "Cool in pan 15 minutes, then poke with fork at 1/2 inch intervals.", "Dissolve gelatin in boiling water.", "Add cold water. Pour over cake in pan.", "Chill 3 to 4 hours.", "Top with Cool Whip."]
["white cake mix", "blackberry gelatin", "boiling water", "cold water"]