Maple Walnut Toffee Dark Chocolate Butter Crunch Bars

Think of a crisp, glossy slab of dark chocolate studded with toasted walnuts and sweet maple toffee, finished with flaky salt that crackles on your tongue. This butter crunch is built in one pan with no oven, and each bar cuts clean and neat. It is the kind of simple candy that disappears from the plate within minutes of being served.

Butter crunch is a classic American candy: buttery, brittle and finished with chocolate and nuts. This version takes a lighter, faster route. A block of dark chocolate is melted and spread into a parchment-lined metal pan, then topped with chopped walnuts and maple walnut toffee pieces, pressed in while the chocolate is still soft.

A final layer of flaky sea salt and a sprinkle of grated dark chocolate finish the top. Once the slab is firm, you cut it into rectangular bars that show the walnuts and toffee throughout. The method asks for basic tools and a few minutes of hands-on work, and the setting time does the rest. You can make it on a weekday afternoon and have bars ready for a dessert table that evening.

Ingredients

Why this recipe works

The method works because dark chocolate sets into a firm, glossy base as it cools. Spreading it while it is fully melted gives an even layer that holds the toppings in place.

Pressing the walnuts and toffee into the soft surface before it sets anchors them, so they stay studded through every bar when you cut the slab. The chocolate needs to be smooth and fluid at the start; if it is too thick, the layer will be uneven and the toppings will sit on top instead of sinking in slightly.

The grated chocolate and the flaky sea salt are placed on the surface last, while the chocolate is still soft enough to hold them. The grated shavings add a fine, melting texture to the top, and the salt sharpens the sweetness of the toffee and the bitterness of the dark chocolate.

Setting the slab in a cool place, and not rushing the process, gives the crisp, clean break that makes the bars easy to cut and pleasant to eat.

Notes and substitutions

Dark chocolate gives the best balance here: it is deep and slightly bitter, which contrasts well with the sweet maple toffee. Choose a bar you enjoy eating on its own, since its flavor will come through clearly once the slab is set. Semisweet chocolate chips are a sweeter alternative, but they contain milk and may not set as firmly, so chop a bar of chocolate when you can.

A rimmed metal baking pan lined with parchment paper makes lifting and cutting the slab simple. A wooden cutting board is useful for chopping the walnuts and grating the chocolate, because the surface holds the shavings and crumbs.

The box grater should have fine holes for the chocolate; chilling the block first keeps it from smearing. If you do not have maple walnut toffee, chopped toffee bits can be used with a teaspoon of maple syrup stirred into the melted chocolate, but the flavor will be simpler.

• dark chocolate: semisweet chocolate chips for a sweeter bar
• walnuts: pecans or toasted almonds, chopped to the same size
• maple walnut toffee: chopped toffee bits with a teaspoon of maple syrup stirred into the chocolate

Equipment

• Wooden cutting board
• Chef's knife
• Box grater
• Rimmed metal baking pan, about 8 by 8 inches
• Parchment paper
• Microwave-safe bowl or double boiler