Preheat the oven to 350 degrees F. Blanch the whole cabbage in boiling water for several minutes to loosen the outer leaves. Trim the thickest parts of the core and fit the leaves into a buttered 9-inch pie pan, overlapping to form a crust, leaving an inch or two sticking up around the rim. Saute the onion and garlic in 2 tablespoons butter until soft but not brown. Add the thawed chopped spinach (drained or steamed), and cook with the onion until quite dry.

Beat the eggs with the spices. Combine the eggs with the spinach, cheeses, pine nuts, and currants. The mixture should be quite stiff. Spread it on the cabbage crust and turn up the edges. Dot with remaining butter. Bake about 45 minutes.