One-Pot Creamy Penne Pasta Delight

Ingredients

• 2 cups water
• 2 tsp olive oil
• 1/4 tsp crushed red pepper flakes
• 2 cups spaghetti sauce
• 12 oz penne pasta
• 1 TBSP cream cheese
• 2 cloves garlic, minced
• 1/2 tsp salt
• 1/4 tsp black pepper
• Parmesan cheese, grated
• 1/4 tsp dried basil
• 2 cups fresh baby spinach
• 1 small yellow onion, finely chopped