Wellllll... I had planned on posting a recipe for a four ingredient peanut butter cookie but I tried it and it didn't turn out as good as I thought they would. They were having a hard time sticking together when I rolled them into balls and they felt very oily. They aren't BAD, but they aren't that good, either. So! Instead I will post a recipe for peanut butter dog cookies.
I made these for my dog, Meaty, on his one year anniversary of being with us. He LOVED them! You can make them like a cookie or you can take the time and roll the dough out thinly and cut them into shapes so they are more like biscuits. I opted for the easy cookie way... He's a dog. He won't care if they are just round blobs instead of in the shape of bones or whatever. (Although I did make a single ninja-cookie.)
Peanut Butter Dog Cookies
2 cups whole wheat flour (Or another type of flour if your dog is sensitive to wheat.)
1 cup rolled oats
1/3 cup peanut butter (You can use chunky or creamy... I used creamy.)
1¼ cups hot water
additional flour for rolling (If making biscuits)
Preheat the oven to 350F. Mix the dry ingredients together. Mix in the peanut butter and hot water. You may need to add more flour if the dough is too sticky. Knead the dough well.
Here's where we split for cookies and biscuits. To make cookies, roll into whatever sized balls you want and place on a lightly greased (or non-stick) cookie sheet. Press down on them to flatten them, or you can do what you do for human peanut butter cookies and use a fork to make crosshatch marks on them.
If making biscuits, roll the dough out until its about 1/4 inch thick and cut with cookie cutters. Place on cookie sheet.
Bake for about 40 minutes. The cookies/biscuits will get kind of hard, but that's the way they like em! (Well, I assume that's how they like them. I never really was able to talk to a dog to find out.) The longer they sit out, the harder they get. The recipe I followed suggested letting them cool overnight before eating, but ain't nobody got time for that! I just let the cookies cool completely before serving to Meaty.