Pasta, Peas and everything else

This was my attempt at a light spring type dish. Or something like that. I was having a really lazy day but needed some food so this was what I ended up with. It only took a couple minutes to make. It's got a relatively light cream sauce and assorted random items from the fridge/freezer so I'm not really sure how this is a spring thing but just go with it. It's quick, easy and actually pretty good.

1/2 lb fettucine or other pasta
frozen peas
ham, chopped into small pieces
1/2 container grape tomatoes, halved
1 tbsp butter
1 tbsp flour
1/2 cup milk
1/2 cup chicken stock
1/2 medium onion, chopped

Put the butter and flour in a pan on low heat and stir until coated. Toss in the onions and saute until they are translucent. Add the milk and chicken stock and stir until it bubbles and thickens. Check the seasoning and add the tomatoes and drop the heat to low. Meanwhile, boil a pot of salted water and cook the noodles. A couple minutes before the pasta is done add the peas and ham to the sauce and stir through to warm. Add the pasta and toss. Sprinkle on a little parmesan cheese.