Step 1

Mix strawberry-flavored gelatin mix, sugar, and boiling water together in a large bowl, stirring until gelatin and sugar have dissolved.

Step 2

Refrigerate gelatin mixture until it begins to turn thick and syrupy, about 10 minutes.

Step 3

Gently fold frozen whipped topping into the gelatin mixture until thoroughly combined.

Step 4

Fold the 2 1/2 cups of sliced strawberries into the whipped topping mixture.

Step 5

Spoon filling into the graham cracker crust and decorate edge of filling with 8 strawberry halves.

Step 6

Refrigerate at least 2 hours before serving.