Okay so I'm not actually bipolar, I'm mood disorder NOS, borderline personality, and major depressive. But I do get manic but I spend most of my time on the lower end.
With that said I want to say what I have found SO helpful! When I am manic I buy way too many groceries, I get into a crazy cooking mood in which I want to try all of these new recipes, and this is usually when I also would binge. When I'm depressed I generally don't want to do anything that takes work so if it's microwavable or a frozen pizza type thing then I'm good to go...and I'll binge on the junk stuff too.
I've learned to combine the two into healthy options. When I'm manic I make sure all of my new recipes are healthy, portion controlled, and then I freeze them. When I'm depressed I simply have to grab one out of the freezer, pop in the microwave and then I have healthy food prepared that's not high in sodium and artificial crap like most you find at the store.
Right now I have spinach quiche and spinach lasagna rolls in the freezer along with cupcakes. Yes, cupcakes! Mix a box of cake mix with unsweetened apple sauce and water (I don't know the amounts off hand but google will) and then freeze the batter in preportioned cupcake tins (lining them with cupcake paper helps but you have to remove the paper after it's frozen). Then I put them in a freezer bag and when I want a cupcake I take one out of the freezer, pop it in the microwave for 1 minute and cooks right up, fluffy and everything. I keep a can of whipped butter cream frosting in the fridge. 1 tbs is 50 cals but the cupcake is around 85 so it's only 125 for a whole cupcake.