3 tbsp. unsalted butter
2 lg. yellow onions, thinly sliced
2 lg. red onions, thinly sliced
4 med. size leeks, well rinsed, dried and thinly sliced
1/2 tsp. salt
Ground pepper, to taste
1 1/2 c. grated Havarti
2 pkgs. (5 oz. each) Boursin with herbs
1 1/2 c. grated Gruyere
1/2 c. dry white wine

Preheat oven to 350 degrees. Butter an 8 cup baking dish with 1 tablespoon of butter. Make a layer in the baking dish, using a third each of the yellow onions, red onions and leeks. Sprinkle the layer sparingly with salt and pepper. Top with the Havarti and make 1 more layer of the onions and leeks. Add a little more pepper.

Top this layer with the Boursin. Layer the remaining onions and leeks and top with the Gruyere. Dot the top with the remaining 2 tablespoons butter. Pour the wine over all. Bake for 1 hour. Cover the top with aluminum foil, if it gets too brown. Serve immediately - 6 portions.