Welcome to the weekly r/Nutrition feature post for questions related to your personal diet and circumstances. Wondering if you are eating too much of something, not enough of something, or if what you regularly eat has the nutritional content you want or need? Ask here.
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What would make me gain more weight? A bowl of oatmeal by itself, or a bowl of oatmeal with some peanut butter?
The bowl of peanut butter will have more calories, but the fats will slow the absorption of the oatmeal, thus reducing the insulin spike, this reducing the increasing of fat cells due to the insulin.
The bowl of oatmeal by itself will spike the insulin harder, thus causing increased weight gain, but there is less actual calories.
How do these factors even out, and which one will cause more fat gain?