Dissolve Jello in 1 cup hot water; drop frozen strawberries in hot Jello; stir until it starts to jell. Cut cake down about 2 inches in a slant, trying to make a trench. Pinch into pieces this portion of cake. Add it to Jello mixture, then pour all this in center of cake and on top.
Then cover entire cake with Cool Whip. Let set in refrigerator for 1 1/2 hours to jell form. The angel food cake can be substituted with a plain yellow cake.