Breakfast: Egg whites (see this post for how I make eggs)
Lunch: Yellow squash noodles + beef
Dinner: Lunch leftovers
Squash is a great clean carb source and I love using it in place of pasta. It really does feel like a comfort food in the same way pasta does, but you can feel good about filling up on squash where pasta will probably just make you want to sleep. I used my biggest cast iron skillet and it made a ton so I ate a little for lunch and more for dinner.
I have this electric spiralizer that I found for five dollars! at Habitat for Humanity and it might be my favorite kitchen gadget ever. I spiralized two medium sized yellow squash while I browned about a pound of ground beef. I added salt & pepper, chopped garlic and onion, and when it was done cooking I drained any grease from the pan then added the squash and a full jar of this compliant pasta sauce from Aldi. Stir it all up, turn the heat down low, cover and cook for 25 minutes or until the squash is soft.