Step 1

Set the oven to 375F

Step 2

Peel and slice the onion in half. Then slice it in half again, and cut 3 of the sections into very fine slices. Take the last piece and mince it. Put the onion in a bowl with the rest of the ingredients and mix well until everything is thoroughly combined. Taste and adjust the seasonings to your liking.

Step 3

Spoon the mixture into an ovenproof casserole and bake for 25 minutes until browned and bubbly.

Step 4

While the dip is baking, slice a baguette and place the slices on a hot grill pan to toast them on both sides. Serve with the hot dip.