French Herb Crêpes with Caramelized Onion & Gruyère Filling

Ingredients

• 1 cup all-purpose flour, sifted
• 2 large eggs
• 1 1/2 cups whole milk, room temperature
• 4 tablespoons unsalted butter, melted, plus extra for pan
• 1/4 teaspoon sea salt
• 4 medium yellow onions, thinly sliced
• 3 sprigs fresh thyme, plus extra for garnish
• 2 tablespoons balsamic vinegar
• 1 1/2 cups Gruyère cheese, grated
• 3 cups fresh arugula, lightly packed
• 2 tablespoons shallots, minced
• 1 teaspoon Dijon mustard
• 2 tablespoons red wine vinegar
• 4 tablespoons extra virgin olive oil
• 1 pinch black pepper, freshly ground, to taste

Instructions

1. 1

   Whisk together flour and salt. In another bowl, beat eggs with milk and 3 tablespoons melted butter. Combine wet and dry ingredients, stirring until smooth. Let batter rest 15 minutes.

2. 2

   While batter rests, begin caramelizing onions: heat 2 tablespoons butter in a large skillet over medium heat. Add sliced onions and thyme sprigs. Cook 25-30 minutes, stirring occasionally, until deep golden brown and sweet.