Preheat the oven to 350 degrees Fahrenheit. Spray a 9 x 13 x 3-inch baking dish with nonstick pan spray and set aside.
In a large bowl, whisk together 1 ⅔ cups all-purpose flour, ⅔ cup powdered sugar, and ½ teaspoon salt.
Add 1 cup unsalted butter and cut in with a fork or pastry blender until crumbly. Use your fingers to rub the butter into the mixture until it forms a dough but is still quite dry and crumbly.
Press the mixture into the bottom of the prepared pan and bake for 25-28 minutes, until golden brown around the edges.
Remove from the oven and let cool completely.
Layers
Spread 1 pound diced fresh Strawberries evenly over the cooled crust.
For the cream cheese layer, add 2 (8-ounce) packages softened cream cheese, ⅓ cup granulated sugar, and 1 teaspoon vanilla extract to a large bowl and beat with a hand mixer or stand mixer fitted with the paddle attachment until smooth.
In a separate bowl, add 1 cup chilled heavy whipping cream and ¼ cup powdered sugar and beat until it reaches stiff peaks. Fold the whipped cream into the cream cheese mixture until smooth.
Spread half of the cream cheese mixture over the top of the chopped strawberries and smooth evenly. Place in the refrigerator to chill while you prepare the strawberry jello layer.
Add ⅓ cup strawberry gelatin mix and 1 tablespoon lemon juice to the remaining half of the cream cheese mixture and stir by hand until fully combined and no streaks remain. Spread evenly over the cream cheese layer and chill in the refrigerator for at least 10 minutes.
Top the strawberry layer with 1 (8-ounce) container thawed whipped topping and smooth over the top. Cover and chill for at least 4 hours to let it set up completely.
Top with sliced or chopped strawberries, if desired, and serve chilled.