The night before you make the baklava, or about 6-8 hours before, thaw the frozen phyllo in the refrigerator. Remove from the refrigerator and let rest at room temperature for at least 1 hour before starting. Depending on the size of the phyllo sheets, you may have to cut them to fit into a 9x13-inch tin.

Preheat oven to 350°F.

Pulse walnuts and pistachios in a food processor until coarsely ground. Add sugar, cinnamon, cardamom and a pinch of salt to the ground nuts and pulse until just combined.

Melt butter in the microwave in a glass 2-quart measuring cup, or on the stove in a small saucepan over low heat.

Brush the bottom and sides of the tin with melted butter.

Carefully unroll phyllo sheets. Lay down one sheet in the tin so it totally covers the bottom. Gently brush the top of the sheet with butter. Repeat this step with five more sheets.

After the sixth layer, lay a clean dish towel over the unused phyllo to keep it from drying out. Evenly spread half of the nut mixture over the top.

Add six more phyllo sheets on top of the nut mixture, brushing each with melted butter.

Spread remaining nut mixture over top.

Add the final six sheets of phyllo, layering each with melted butter. Set aside remaining butter for later.

Using a sharp knife, score the phyllo in diamond shapes, trying to cut only halfway through the thickness of the baklava. Begin in one corner and cut across on a diagonal to the middle of the long side of the pan. Continue with parallel scoring on either side of the first cut, about 2-inches in thickness each. Now score the baklava vertically with three equal cuts. You may have to gently hold the phyllo in place as you do this.

Bake on the middle oven rack for 32 to 34 minutes. It is done once it’s golden brown on top

Pour the honey into the same container as the leftover butter. Heat in the microwave or over the stove for one minute. You want the honey to be thin but not boiling.

Give the honey a stir and pour it, evenly, over the baklava right out of the oven. Let the baklava cool at room temperature for at least 4 hours.