Some Tips from a big man.
Add in more sugars to your meals in the forms of fruit. This will increase your hunger and keep you wanting more each meal. With breakfast eat a cup of pineapple, and 1 apple. Post workout add honey to your protein shake and eat watermelon.
With your regular meals add in 1/4 cup to 1/2 cup of diced fruit like pineapple, strawberries, or blueberries. Save your fat intake for later in the day when you will be limited on your hunger anyway. If you take too many fats in during the day time you will not be able to eat as much because fats make you will feel fuller for longer. Dont stack your fats with fruit in the later part of the day.
Try eating more greek yogurt in the later part of the day. This will help you digest all of the protein you are in taking. I usually add in 1-2 cups with my protein shake as my last meal of the day.
This next part might be debatable but It works for me and everyone else who I train.
Try doing very very very low intensity cardio for 45 minutes 2-3 times a week if possible. I mean so low that you do not even break a sweat. example walking on the tredmill at 2.2 to 2.5 pace.
This will raise your metabolism by tapping adipose tissue stores and not glycogen stores in the muscle. This will also prevent you from tapping into your blood sugar. When you tap into your blood sugar and it drops below the amount that your brain needs to survive, your brain tells your metabolism to slow down because its food source is dwindling. However when you perform long bouts of very very very very very low intensity your blood sugar will not be used and the only option is adipose tissue because your body wants to reserve glycogen for when it is needed ie lifting heavy ass weights or sprinting. When you do this you increase your metabolism. And in this time you should only burn maybe 300 calories which is very insignificant compared to what you need to be eating.
At 4000 calories a day I was still able to loose 2.2 lbs of fat per week which is about a kilogram. Now lets think about this for a second. If I am taking in 4000 calories a day.
That is
28000 calories a week.
To loose 2.2 lbs of fat in one week I would have to be at a defecit of 6000 - 8000 calories per week.
Reasoning:
(1 kilogram = 1000 grams) 1 gram of adipose tissue = 6-8 calories.
I will knock off a 3000 for the actual calories burned during tredmill excersice and weight lifting.
So every week I was at a deficit of 2000-5000 calories just by raising my metabolism.
Which means that my metabolism was burning at 28000+(2000-5000)= 30000-33000 calories a week.
This corresponds to 4300-4700 calories a day.
Now I was able to do this without loosing any strength whatsoever and in fact ended up getting stronger. Now I had such High numbers because my bf set point is usually around 10% when I start "Dieting" but the same holds in smaller ratios for smaller people.
Even for a "lean person" this will not affect your lifting in any way. Lets take even the leanest of them and say we are dealing with someone that is 220 5% body fat. This corresponds to 11 pounds of body fat which is 5 kilograms of adipose tissue. In his 5 kilograms of adipose tissue he has (5 kilograms = 5000 grams = 30000 - 4000 calories). Say you only burn 300-500 calories and hour walking at a very low pace. That means this very lean person can end up walking 60 - 133 hours without tapping into blood sugar or glycogen.
Now I know you are not wanting to loose weight at all but if you add this in sparingly there is no doubt that your appetite will definately increase from your increased metabolism not to mention a bit of fat loss.
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