Step 1

Preheat oven to 400 degrees.

Step 2

In a skillet preheated to medium heat, melt butter. Place onion into skillet and cook for a few minutes.

Step 3

Add salt, pepper, sugar, Worcestershire sauce, and thyme. Stir and cook for another couple of minutes.

Step 4

Add beef broth and cook until onions are golden brown - about 12 minutes. Make sure to stir occasionally to keep the onions from burning.

Step 5

Spray a 5 X 8 baking dish with non-stick cooking spray. In a large bowl combine zucchini noodles and French onion mixture. Pour the French onion zoodle mixture into the dish and garnish top with Fontina cheese.

Step 6

Place dish in the oven and bake for about 20 to 25 minutes or until golden brown. Remove from oven and cool slightly before serving.

Step 7

Garnish with fresh thyme if desired. Also, there is a probability that water from the zucchini will appear. If so, just drain it off carefully with a spoon before serving. Enjoy!