Collect all of your ingredients: I can of condensed milk, 4lbs sugar, 2 tsp. vanilla, 4oz butter, 2 cups milk, 2 tbsp. dessert spoon syrup
Grease a 9x13 pan with butter
Combine the sugar, butter, and milk in a large pan
Bring to a boil over low heat, stirring often
Add condensed milk and dessert spoon syrup. Let boil for about 20 minutes on low, stirring occasionally
You know when it's done once the color is a golden brown like this.
Remove from heat, and add vanilla
Continuously stir for 7 minutes
Pour in pan, cut into squares when cooled. If it turns out to be more than an inch thick, use two pans. Enjoy!