Creamy Baked Rigatoni with Mushrooms & Thyme Recipe

Ingredients

• 400 g rigatoni pasta
• 1 tbsp salt (for boiling pasta water)
• 2 tbsp unsalted butter
• 2 tbsp olive oil
• 1 large yellow onion (finely diced)
• 4 cloves garlic (minced)
• 500 g cremini mushrooms (sliced)
• 1 tsp fresh thyme leaves (plus extra for garnish)
• 1 tsp salt (or to taste)
• 0 tsp 0.5 freshly ground black pepper
• 0 tsp 0.5 crushed red pepper flakes (optional)
• 3 tbsp all-purpose flour
• 500 ml whole milk (warm)
• 200 ml heavy cream
• 100 g grated Parmesan cheese
• 120 g shredded mozzarella cheese
• 80 g mozzarella (extra for topping)
• 40 g Parmesan cheese (extra for topping)