Overnight oats have a protein problem. The classic recipe, oats, milk, yogurt, a spoonful of peanut butter, lands somewhere around 12 to 15 grams of protein, which is fine for a light breakfast but not enough for anyone deliberately eating high-protein. The fix is not complicated, but it is specific: the ratios have to change, the add-ins have to earn their calories, and the whole jar has to stay under 500 calories while clearing 25 grams of protein. This high protein overnight oats budget guide does exactly that, five ways, each at roughly a dollar fifty a jar. The budget constraint is what makes this interesting. Hitting 25 grams of…