Easy One-Pot Mac&Cheese

Here is the second virtual cooking class from Maria's Kitchen.

Ingredients:
1 lb - cooked pasta (whatever kind you have available)
White Sauce - In saute or frying pan
2 T - melted butter
1/4 -1/2 C - chopped wild leek, green onion, or cooking onion (whatever you have) - save the green of the leeks or green onion for later.
1/4 t - turmeric (optional)
2 T - white flour
1 1/2 C - milk
pinch - salt
pinch - ground pepper
Mix white sauce and
1/3-1/2 lb - crumbled or grated cheese (any kind you have)
into pot of pasta.
Add:
1 cup - fresh or frozen peas (optional)
cut up wild leek leaves or green onion leaves.
Stir and serve hot.