Spinach with Caramelized Onions, Pine Nuts, and Dried Apricots | America's Test Kitchen

Ingredients

• 1 tablespoon olive oil
• 1 tablespoon unsalted butter
• 1 large red onion , chopped medium
• 1 teaspoon granulated sugar
• 2 large cloves garlic , minced
• 2 anchovy fillets , rinsed
• 1/4 cup finely chopped dried apricots
• 1 tablespoon sherry vinegar
• 3 bags baby spinach (10 ounces each), stemmed, washed thoroughly, and partially dried, with some water left clinging to leaves
• Salt and ground black pepper
• 1/3 cup pine nuts , toasted in small dry skillet over medium heat until golden and fragrant, about 5 minutes