Ingredients

• 1 lb penne pasta
• 1 tablespoon olive oil
• 1 cup red onion, diced
• 2 garlic cloves, minced
• 1 1/2 cups frozen chopped spinach
• 15 ounces tomato sauce
• 1 (14 1/2 ounce) can diced tomatoes
• 1/4 teaspoon salt
• 1 tablespoon dried basil
• 1 tablespoon dried oregano
• 1/4 teaspoon spike seasoning
• 1/4 teaspoon fennel seed
• 1/4 teaspoon red pepper flakes
• 3 tablespoons parmesan cheese
• 3 tablespoons light cream cheese
• 1/4 teaspoon ground black pepper
• 8 ounces baby portabella mushrooms, sliced