Garlic Butter Tomato Spaghetti - Serving Dumplings

Ingredients

• 14 ounces spaghetti
• 2 tbsp olive oil
• 4 tbsp butter (divided)
• 10 garlic cloves (minced)
• 1 small brown onion (finely chopped)
• 5 tbsp tomato paste
• ¼ cup white wine (or pasta water)
• 1 can (28 ounces/800 g) good quality crushed tomatoes
• 1 tsp Italian seasoning
• 1 tsp sugar
• 1 tsp salt
• 1 tsp black pepper
• 1.5 ounces grated Parmesan (more for serving)
• 2 tbsp freshly chopped basil
• red pepper flakes (for serving)