My go-to struggle meal:

• Cubed Tofu or pre-cooked lean sausage, sliced
• Tomato
• Rice

Remove tomato stem ends with a knife but otherwise leave unsliced. Put rice, tomatoes, and chopped tofu/sausage in a rice cooker with water. The tomatoes then explode in the rice cooker and flavor everything. It's a balanced meal and takes two minutes of prep, and helps keep me from splurging on fast food on a low-energy day.

I'll often add things I have on hand, like carrots, frozen broccoli, a bouillon cube, olive oil, feta or mozzarella cheese, fresh-picked basil, but I've done it with just the three ingredients above, and it holds up when salted.