Penne and Spinach a la Vodka — Three Many Cooks

Ingredients

• Salt
• 12 ounces penne (whole grain or white, your choice)
• 8 ounces (about 8 cups) baby (or coarsely chopped) fresh spinach
• 2 tablespoons olive oil
• ½ medium sweet onion, such as Vidalia
• 3 medium garlic cloves
• 1 cup each: vodka and chicken or vegetable broth
• 1 can (28 ounces) crushed tomatoes
• ½ teaspoon baking soda
• ½ cup evaporated milk
• ¼ cup Parmesan cheese, plus extra for topping