TOTAL TIME: 40 MINUTES
½ cup unsalted butter, cut into 4 pieces
½ cup glucose syrup
½ cup sugar
½ cup brown sugar
½ cup sweetened condensed milk
⅛ tsp salt
¾ tsp vanilla extract
Grease a 20 cm square baking dish and set aside.
Place butter in a large glass microwave safe bowl and heat in microwave until butter has melted. Add glucose syrup, both sugars, condensed milk and salt and whisk thoroughly.
Return to microwave and cook on high for 6 minutes. Carefully remove from microwave (it will be very hot). Test by placing a small spoon of the caramel in a bowl of iced water, then remove it from the water. It should have formed a soft, pliable ball. If it needs a bit of extra time, return to the microwave and heat in 20 second increments.
Add vanilla extract and mix well, then pour mix into prepared baking dish. Refrigerate until set, about 30 minutes.
Cut into rectangular pieces and wrap each piece in wax paper.