Spinach Squares

Ingredients

• 2 tablespoons butter, melted, divided
• 1 cup all-purpose flour
• 1 teaspoon baking powder
• 3/4 teaspoon salt
• 1/2 teaspoon dried oregano
• 1/4 teaspoon dried basil
• 1/4 teaspoon dried thyme
• 1/4 teaspoon pepper
• 3 large eggs
• 1 cup whole milk
• 2 packages (10 ounces each) frozen chopped spinach, thawed and squeezed dry
• 2 cups shredded cheddar cheese
• 2 cups shredded Monterey Jack cheese
• 1 cup chopped onion
• Sliced pimientos, optional