Use a hand mixer (and a large mixing bowl) or a stand mixer to whip the heavy cream (2 cups) until stiff peaks form.
Add the can of sweetened condensed milk to the whipped cream and mix/fold it gently until the two ingredients are completely combined.
Remove the chocolate coated waffle cone pieces from the fridge and break them apart as much as possible so that the pieces aren't sticking together.
Add the waffle cone pieces to the ice cream and gently stir them in to combine.
Pour the mixture into your final storage container (whether that is a 7 cup pyrex, loaf pan or multiple smaller containers).
Spoon the fudge evenly throughout the ice cream, then use a butter knife to swirl the fudge. Be sure not to swirl too much as to mix it in with the ice cream. We want those nice thick swirls!
Cover and place the ice cream in the freezer for at least 6 hours, preferably overnight.