Line a 9-inch square baking dish with parchment paper. Set aside.
Place whoppers in a large Ziploc bag. Smash them gently (not into fine pieces, but into large chunks). Set aside.
In a medium saucepan, heat butter, sugar, salt and heavy cream over medium high heat. Bring to a rolling boil while stirring constantly. Set timer and boil for a full FOUR minutes (keep stirring).
Place white chocolate morsels, marshmallow cream and Ovaltine in a large mixing bowl. Pour boiling butter mixture over morsels. Turn electric mixer on medium and combine until white chocolate is melted and smooth. Fold in 1 ½ cup of crushed Whoppers.
Pour into prepared dish. Top immediately with remaining 1 cup of crushed whoppers, pressing them into the fudge. Refrigerate (or allow to set at room temperature) for 3 hours. Cut into bites and serve. Best if eaten within 24-48 hours. ENJOY!
Notes
To smash the Whoppers, place them in a gallon sized zip top bag. Use a rolling pin or mallet to crush them into large chunks. Some variety in size of the pieces is best.
Boil the butter, cream and sugar mixture on the stove for a full 4 minutes. Stir constantly, keeping the mixture at a rolling boil.
Use a stand mixer or beaters to combine the boiled sugar mixture with the marshmallow fluff, Ovaltine and white chocolate. Keep mixing until everything is smooth and combined.
The fudge sets up quicker if chilled in the refrigerator. You can leave it at room temperature, but it will take a couple of hours longer to reach a firm slice-able consistency.