TX Honky, have you tried NOT using coupons?

That is, try not buying anything that you have ever seen coupons for

Since you are already reasonably frugal and cooking-oriented and therefore not going to fill up the cart with Evian water and lobster and frozen raspberries

what you will find is that this encourages you to "make do" with basic staples (like flour, cornmeal, produce, meat, beans, spices) instead of prepared foods (like canned soup or stock, prepared sauces or mixes, or anything where part of the cooking or prep work has already been done for you).
Also, stick with in-season produce as much as you can, if you're not already, and see if there are any farm stands where they'd give you a price break on large quantities or 'seconds'.
I would guess that a significant part of your food budget is the dog and cat food, btw (anyhow that's how it is here). I'm not going to encourage you to cheap out on that -- I think the cheapest brands are not good to feed our pets -- I'm just pointing this out in case it makes you feel any better about comparing your spending on HUMAN foods with other peoples'
Good luck and welcome to the forum,
Pat