In a medium bowl, combine diced strawberries, fresh blueberries, and a sprinkle of sugar. Gently toss the fruits together until evenly distributed, about 2 to 3 minutes.

Cube the angel food cake into small 1-inch cubes and arrange them at the bottom of your serving jars or bowl.

Spoon a generous layer of frozen whipped topping over the cubed angel food cake, using about half of your whipped topping to ensure it covers completely.

Add a layer of the mixed berry blend on top of the whipped topping, using about half of the berry mixture.

Repeat the layering process with another layer of cubed angel food cake and the remaining whipped topping, smoothing it out to cover every nook.

Finish with a final layer of the remaining berry mixture on top to create a stunning visual effect.

Cover with lids or plastic wrap and place in the refrigerator for at least 30 minutes before serving.