If and when my wife or kids complain about my food, I show them the fridge and stove top and say have fun cooking your own meals. Suddenly they shut up. ( usually they're joking and just want to see my response ( kids 18 and 20). But Im one of those people who watch them eat what I cooked. I look for facial expressions or whats left over. Thats usually how I get my feedback.
Sure, sometimes i get in a rut of things not up to par. Usually, at that point, Ill take a step back and go back to the basics. Ill cook things that are maybe simpler or that I've cooked hundreds of times.
I remember once I was asked to cook a dish Ive made dozens of times, for a family gathering. Problem was, I had a cold and a stuffed nose. When I served it, as always, I noticed the left overs and the faces. I asked my wife what the deal was, since its always such a hit. She said I put so much salt in, it was almost not edible
. Because of my cold, I couldn't taste a damn thing.
Your situation, having a 1 yearly, clearly your priorities have changed ( which is a good thing). Its better that you be a great mom,than a great cook. you'll get back in to your groove in time. Just keep things simple, go back to the basics, and have a great time enjoying your 1 year old. you have more than enough time in your life to cook, and Im sure you'll bounce back.
Without getting involved, I don't see any reason for your significant other to get mad.