01 -
Melt your butter in a large skillet over medium heat. Add the chopped onion and cook, stirring occasionally, until it becomes soft and translucent.
02 -
Toss in the minced garlic, Italian herbs, salt, and pepper. Stir everything together and let it cook for about a minute until wonderfully fragrant.
03 -
Sprinkle the flour over the buttery mixture and whisk vigorously until it's completely absorbed and there's no dry flour visible.
04 -
Pour in the broth and cream while whisking constantly to prevent any lumps. Keep cooking over medium heat, whisking frequently, until the sauce thickens to a nice creamy consistency. Taste it and adjust the seasoning if needed, then set aside.
05 -
Bring a large pot of salted water to a rolling boil. Add the spaghetti and cook just until al dente (still slightly firm). Drain thoroughly.
06 -
Heat your oven to 400°F. Lightly grease a 9x13 inch baking dish. Combine the cooked spaghetti, turkey pieces, and frozen peas in the dish. Pour all of your creamy sauce over the top and use a spatula to spread it around, making sure it seeps down between all the noodles.
07 -
Sprinkle the shredded mozzarella evenly over everything. Pop it in the oven and bake for 20 minutes, or until the cheese is melted, golden brown, and bubbling around the edges.