From The Enchanted Broccoli Forest, by Molly Katzen Serves 3-4 Ingredients: 1/2 lb Brussels sprouts 1/2 cup chopped onion 1/2 lb chopped mushrooms 2 Tbsp butter 1/4 tsp salt lots of freshly ground black pepper 1/2 tsp dill weed 1/2 tsp dried tarragon 1/2 tsp dry mustard 1Tbsp flour 1 cup hot milk 1/2 tsp prepared horseradish 1 packed cup grated cheddar Preparation: Cut the Brussels sprouts into quarters, and put them up to steam for 10-15 minutes. Cook the…