The next recommended article is
Protein from Meat or Vegetable Sources in Meals Matched for Fiber Content has Similar Effects on Subjective Appetite Sensations and Energy Intake-A Randomized Acute Cross-Over Meal Test Study
The next recommended article is
Protein from Meat or Vegetable Sources in Meals Matched for Fiber Content has Similar Effects on Subjective Appetite Sensations and Energy Intake-A Randomized Acute Cross-Over Meal Test Study
Also, subbing TVP for mince is also a way of increasing fibre and protein at the same time. After hydration TVP is almost double protein by weight compared to store-bought mince (at least where I shop), and it also has a good dose of fibre content, and no fat. Once again, I went 50/50 on this and I could eat less and feel fuller, and I argue it tasted better because the dish wasn't as oily.
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Will need to look into these textured vegetable protein for the sake of the animals.
You generally buy it as one ingredient in a fake-meat product. You can find it at some "natural foods" stores and online, but it's much cheaper to manufacturers as a bulk product than at a consumer level. They use it to make some pretty effective fake meats, though the high-profile ones (like Impossible and Beyond) use related-but-different products.
As to your macronutrient concern, unless you are trying to eat 4000+ calories which is about when it becomes a chore to eat (I once had a job where I lost weight eating less than that), high fiber food isn’t going to make it hard to get your macro nutrients with most modern diets. And foods high in fiber tend to have more micronutrients. For instance the germ in whole grain is literally the nutrients needed to kickstart a seed into a plant.