Well, instead of pasta, use a potato.
Wash a larger potato and cook most of the way in microwave.
Do a red sauce (any jar pasta/spagetti sauce on sale!). First saute onions for a few minutes in olive oil, then add veggies of choice in order of how dense they are. Ex. you would add sliced carrots (can add a bit of natural sweetness) Before you would add a zucchini type (cooks in 3 min). Add sliced/diced garlic if desired, or just powder. When veggies are almost done, add red sauce and spices and cook on low until all heated. Top w cheese at the end, turn off heat put lid on, to melt the cheese. If you don't have a lid, use a plate

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Heat the potato to finish, cut open and top with your red sauce veggie mixture. Add more cheese if desired, we really like cheese.
Golly you can use any veggies (even kale, spinach, chard etc) and spice as you like. A little hot pepper, the sky is the limit.
You can also cook some ground beef and add that. Many times I purposely cook double/triple the amount of ground beef and then package it to freeze, so I have a portion ready w/o having to cook it. I just under cook it a little.