That is adding so many calories though? Adding the 2 tablespoons of peanut butter is another 200 calories.
An example, im targeting 2200-2400 calories. with 3 600 calorie meals (which tbh is pretty hard to do 7 or 800 is more likely) , there isn't that much buffer to add stuff like thhat.
Is it? An apple is only ~100 calories. 300 calories. You could make it a full meal by adding 500 calories of chicken or beans/lentils + rice to get to your 800 target and that's a very solid meal. A whole can of tuna in water is only ~200-250 calories and another option to add more protein.