Leftover pasta can be used in many ways to create new and delicious meals. Here are some ideas:

1. Pasta Casserole: Mix leftover pasta with a simple white or red sauce, add veggies and cheese, and bake in a casserole dish.

2. Pasta Salad: Use leftover pasta to make a delicious pasta salad. Add veggies, cheese, and dressing to create a refreshing and easy meal.

3. Pasta Frittata: Mix leftover pasta with eggs and breadcrumbs to create a delicious frittata. This can be served for breakfast or lunch.

4. Pasta Stir Fry: Use leftover pasta in a stir fry with veggies and protein for a quick and easy meal.

5. Pasta Side Dish: Use leftover pasta to create a simple side dish. Season with salt and pepper, and add grated cheese for extra flavor.

6. Pasta Soup: Use leftover pasta in a soup with broth, veggies, and protein for a hearty and comforting meal.

7. Pasta Pizza: Use leftover pasta as a topping for pizza. Add sauce, cheese, and any other toppings you like.

8. Pasta Bake: Mix leftover pasta with sauce and cheese, and bake in a casserole dish for a delicious and easy meal.

9. Pasta Salad Dressing: Use leftover pasta sauce as a dressing for a salad. Add some olive oil and vinegar for extra flavor.

10. Pasta Sandwich: Use leftover pasta as a filling for a sandwich. Add some veggies and cheese for extra flavor.

Remember to store leftover pasta in an airtight container in the fridge for up to 3-5 days.