Prepare the chocolate sauce and allow it to cool completely.

Pour heavy whipping cream into a large mixing bowl and beat on high until light and fluffy. Use a spatula while mixing to scrape the sides of the bowl to ensure all of the heavy cream is whipped.

Pour the sweetened condensed milk and vanilla extract into a large bowl and stir to combine.

Lighten the condensed milk by gently folding a small amount of the whipped cream into the bowl. Do not overmix.

Add the rest of the whipped cream and fold into the mixture until thoroughly combined. 

Pour half the whipped cream mixture into a 9”x5” loaf pan and spread into an even layer. Drizzle half the chocolate syrup and spread 1/3 cup of the toffee bits evenly across the top. 

Spoon the remaining whipped cream mixture on top and spread until smooth. Repeat the process with the remaining chocolate syrup and toffee.

Insert a butter knife into the mixture at one end of the loaf pan and pull it back and forth across the length of the pan to incorporate the chocolate and toffee throughout.

Cover with some plastic wrap and gently press across the top to remove any air bubbles. Place in the freezer for a minimum of four hours, or preferably, overnight. 

When you are ready to serve, remove the toffee ice cream from the freezer 10-15 minutes before serving to soften. Scoop into individual bowls and top with additional chocolate sauce and toffee bits, if desired.