How can I lose weight living at home?

You either have to make the sacrifice and give up her food or ask her to cook healthier.

My mom used to be the same way. Making everything with an absurd amount of oil, butter, etc. Slowly she realized that I would ignore her food and eat PB&J's all day so she started cooking with less oil.

I made the choice to be healthier and gave up almost all of her fine cuisine and extra treats in order to keep to my calorie goal. This wasn't done overnight but over the course of 7-8 months. I did manage to lose 40lb so it wasn't for naught.

I would advise you sit and have a talk one on one with her (respectfully of course, she is still your mom) and explain your concerns. Maybe get more involved with grocery shopping. It could even become good old fun mom/kid time. She may even welcome your help with it! I know I shop alone for just my husband and our two very young children , but it's still a boring and tedious task!
As far as the tempting junk, it just takes a lot of willpower. Easier said than done, I know. Or if you want some, just eat small portions of it. I still have a small bit of ice cream and cookies here and there, if it fits in my daily plan.

Why is she dishing up your food??

Doesn't everyone live at home? Where else would you live?

I really need to lose weight. I've been gaining like crazy the pat two years, and it's time to turn that around.
Here's the thing.
I'm 17 years old. I live at home. I make my own breakfast and lunch, but my mother makes the family dinner most days. Even when I make it, she's still the one that buys groceries. That wouldn't be a problem, except she's weirdly opposed to anything that seems "too healthy". I don't think she even notices, but she thinks things are gross or snobby or hippie the minute she finds out that they're healthy. Add this to the fact that she makes supersized amounts of food (doubles recipe for 6 to feed 7 people, two of whom are under age 12, and then dishes it ALL out) and that she gets all concerned about clearing plates and eating enough, as well as her propensity to buy at least a few "treats" during each grocery run, and it's HARD to lose weight.
Does anyone have any advice for dieting when I have a fridge full of ice cream (stupid summer coupons), a drawer full of snacks (read: goodies), and a mother who serves up huge portions of delicious, but calorie laden meals?

Not to make you feel bad or anything but I just looked over your diary and noticed that on Sunday you had 3 desserts with dinner. How can you expect to lose any weight eating that way? Being 17-18 yrs old, you need to stand up for yourself and say something to her. You can do it respectfully and still get your point across. If she doesn't want to change the way she cooks, then get in there and make yourself something. You can take what you have and find healthy ways to prepare it. A great tool is www.allrecipes.com. Its online and you can also get it on your smartphone. The great thing about it is you can punch in the ingredients that you have and it will give you recipes that match, while giving you a brakdown of calories and fat so you monitor it yourself. Try suggesting the site to her for fresh and new recipes. I am a mom of 5 with a husband that refuses to eat well so I have learned to use the site to creat healthy meals without him knowing they are better for him. The other things i would suggest is eating more regularly. I see on some days you skip meals or only have vegetable for lunch. You need to prioritize your meals and make sure you don't skip any. I can help you figure out some proper meals if you like, or just be here to talk and vent with. Feel free to add me. I hope I didn't lecture too much. I was just trying give a little insight.