Cooking is an art, and every step is a brushstroke. Follow these steps to create your masterpiece:

1. Heat the olive oil in a large skillet over medium heat. Add the chopped onion and cook until translucent, about 5 minutes. Stir in the garlic and cook for another minute.
2. Add the ground beef to the skillet, breaking it up with a wooden spoon. Cook until browned, about 8-10 minutes.
3. Stir in the diced tomatoes, tomato paste, oregano, basil, salt, and pepper. Let the mixture simmer for 10 minutes, allowing the flavors to meld together.
4. Meanwhile, cook the pasta according to package instructions. Drain and set aside.
5. Add the frozen peas to the beef mixture and cook for an additional 2 minutes.
6. Combine the beef mixture with the cooked pasta, and transfer to a baking dish. Sprinkle the shredded cheddar cheese on top.
7. Place under a broiler for 3-5 minutes, or until the cheese is bubbly and golden.
8. Remove from the oven and let it sit for a couple of minutes before serving.

Remember, patience is key — let the flavors come together naturally, just like how Mum taught me to let a good stew simmer.