Very quick and very simple - great for coffee or as a present.
Put 400g sugar, 140g butter and a can of condensed milk in a large microwaveable bowl with a pinch of salt. Microwave for about 15 minutes but check every few minutes since it can really puff up and oversplill. Stir when you check it.
When it has thickened and gone a nice caramel colour it is ready. Stir in a tsp of vanilla extract and 1-2 tbsp of brandy (or alcohol of choice- or you can leave this out). Pour into a 20cm square lined tin and allow to cool and set and then cut into pieces.