1 cup walnuts or pecans (I used pecans), roasted and chopped
2 tbsp butter, softened
2 tbsp brown sugar
1 tsp vanilla
Juice and zest of 1 lemon
Pinch of salt
Preheat the oven to 350F and put your cast iron in to warm with the oven. This is an important step or else you’re essentially putting the crisp in a cold oven!
For the topping: Combine the flour, brown sugar, and salt together in a large bowl. Use your fingers to work and crumble the butter into the dry mix. The final product should have butter the size of blueberries.
For the fruit mix: Put the peaches and pecans in another large bowl. Add the butter, brown sugar, lemon juice, zest, and salt to the fruit-nut mix and toss.
Place the fruit mix in your hot cast iron and sprinkle the crisp topping on top.