Frosted Toffee Bars

These toffee bars are one of those five-ingredient recipes that punch way above their weight. A chewy base of oats, brown sugar, and melted butter gets pressed into a pan and baked until light golden, then topped with a layer of melted semi-sweet chocolate and a scattering of chopped peanuts.

The oat base bakes for just 13 minutes. You want light golden brown, not dark. Overbaking makes the bars hard and brittle instead of chewy with a slight crunch. They’ll firm up more as they cool.

The chocolate goes on while the base is still slightly warm so it melts evenly when you spread it. Then the whole pan chills until the chocolate sets into a firm, snappy top layer.

Pro Tips

• Pack the oat mixture firmly and evenly into the pan. Loose spots bake faster and break apart when you cut the bars.
• Melt the chocolate over low heat and stir constantly. Semi-sweet chocolate scorches quickly and there’s no fixing it once it seizes.
• Let the bars chill a full 4 hours before cutting. Cutting too early smears the chocolate layer.
• Use a sharp knife run under hot water and dried between cuts for the cleanest edges.

Variations

• Use dark chocolate or milk chocolate instead of semi-sweet to shift the sweetness level.
• Swap peanuts for toasted pecans or sliced almonds.
• Drizzle melted white chocolate over the set dark chocolate layer for a bakery-style look.