Cheesy Kale and Mushroom Strata recipe | Epicurious.com | Recipe Cart | Recipe Cart

Ingredients

• 13 oz. sourdough or country-style bread, cut into 1 1/2" pieces (about 7 cups)
• 2 Tbsp. extra-virgin olive oil
• 8 oz. crimini mushrooms, sliced 1/4" thick
• 2 garlic cloves, thinly sliced
• 1 tsp. kosher salt, plus more
• 1/2 tsp. freshly ground black pepper, plus more
• 2 Tbsp. unsalted butter, divided
• 3 leeks, white and pale green parts only, halved lengthwise, sliced crosswise 1/4" thick
• 1 bunch curly kale, ribs and stems removed, leaves torn into 2" pieces
• 8 large eggs
• 2 Tbsp. whole grain Dijon mustard
• 2 1/2 cups whole milk
• 5 1/2 oz. Gruyère or Comté cheese, coarsely grated, divided
• 2 oz. Parmesan, finely grated, divided