Italian Spinach Pie

Ingredients

• 1 tablespoon olive oil
• 2 medium leeks, white part only, halved lengthwise, thinly sliced, and rinsed
• 1 box (10 ounces) chopped spinach, thawed and squeezed dry
• 1 cup cooked long-grain white rice
• 3 large eggs
• 1 cup grated Parmesan cheese
• 1/2 teaspoon dried marjoram, crumbled
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper