Created by Chocolatll on May 20, 2015
Step 1: Preheat oven to 350°F.
Step 2: Heat oil and butter in a large skillet over medium heat.
Step 3: Add fennel and onion and cook until softened, about 10 minutes. Let cool.
Step 4: Combine potatoes, cream and Gruyere in a large bowl.
Step 5: Season with salt and pepper.
Step 6: Add fennel mixture.
Step 7: Stir in tarragon and parsley.
Step 8: Place in a lightly greased 11"x7" baking dish.
Step 9: Sprinkle with Parmesan and cover with parchment paper.
Step 10: Bake for 1 hour.
Step 11: Uncover and bake until potatoes are cooked through and top is golden brown, about 20 minutes more.