Caramelized Onion and Spinach Crostini Recipe — The Mom 100

Ingredients

• 1 baguette ((sliced into 1/3-inch thick slices))
• 5 tablespoons olive oil ((divided; or more as needed))
• kosher salt
• 2 Vidalia or other sweet onions ((halved and thinly sliced))
• Freshly ground black pepper ((to taste))
• 8 ounces baby spinach
• 1 teaspoon minced fresh thyme
• Zest of 1 lemon ((plus more for garnish))