A galette of winter greens

For the crust:

whole wheat flour

all-purpose flour

kosher salt

cold unsalted butter

or 6 tablespoons cold water

For the filling:

olive oil

leeks, dark green parts removed, light green and white parts trimmed, halved lengthwise, swished in cold water to remove any grit, and thinly sliced

greens of your choice, de-stemmed and de-ribbed, roughly chopped into 1-inch pieces

grated Parmigiano

heavy cream (optional)

roughly chopped parsley

Salt

Coarse ground black pepper