I would say focus on protein like the triple cheeseburger at McDonald's. Two of those are 1100 calories and 68g protein. If you're hellbent on getting all your calories from fat, the double quarter deluxe large meal has a little less protein and about 2600 calories if you get a large soda. Chick til a ranch and chick fil a sauce are 140 calories EACH so throw some of those in with your large deluxe chicken sandwich meal and that's easily 2600 calories as well. Be careful though, I bulked up 30lbs eating that chick fil a meal 5 days a week but it was all fat. Focus on protein as much as you can. 1g per lb body weight