Preheat oven to 350F. Line baking sheet with parchment paper.
Whisk the egg in a bowl and add the peanut butter and sugar (and vanilla and salt if using.) Blend everything together really well.
Scoop out 1 tablespoon amounts of dough (I use my smallest cookie scoop) and roll round in your hands. Then roll the balls of dough in sugar to coat well and place on the baking sheet. Space your cookies 2 inches apart. I like to bake one tray at a time for most even baking.
You can simply flatten the balls lightly with the back of a drinking glass or you can make criss cross marks with the tines of a fork, your choice.
Bake on the center rack in your preheated oven for 8-10 minutes. The cookies will puff a bit and then settle down as they cool. Note: your baking time may differ from mine. If you want a crisper cookie you can bake it a bit longer. Pull them out earlier for a softer cookie. I always recommend doing a test cookie or two to see how your oven performs.
Let the cookies cool on the baking sheet for a couple of minutes to firm up and then transfer to a cooling rack.
The cookies will keep up to a week at room temperature. The sugar coating keeps the outside nice and crisp. They can be frozen (cool first) for up to 3 months.
Nutritional information is provided as a courtesy and is an estimate only. This information comes from online calculators. Although The View from Great Island attempts to provide accurate nutritional information, these figures are only estimates.
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