Holy shit! These were amazing.

Peanut Butter Cookies with Peanut Caramel
via David Lebovitz
For the cookie dough
115g unsalted butter, at room temperature
1/2 cup brown sugar
1/2 cup granulated sugar
1 large egg, at room temperature
1 teaspoon vanilla extract
3/4 salted peanut butter
1 3/4 cups plain flour
1/2 teaspoon baking soda
1/4 teaspoon salt
For the salted peanut caramel
1 cup thickened cream
1/2 cup water
1 cup granulated sugar
1 tablespoon golden syrup
1/8 teaspoon salt (I added a bit more as I didn’t add the peanuts)
3/4 finely chopped roasted salted peanuts
100g chocolate (any), melted (optional)
Preheat the oven to 180ºC and line two baking sheets with baking paper.
Beat the butter, brown and granulated sugar until smooth.
Beat in the egg and vanilla until well mixed.
Beat in the peanut butter.
Sift together the flour, baking soda, and salt in a separate bowl.
Add the dry ingredients to the peanut butter mixture and stir until there are no patches of flour.
Scoop up tablespoon-sized portions of the dough and roll each piece between your hands so they’re as smooth as possible so they don’t crack at the edges when performing the next step.
Place them 1 1/2-inches (2 cm) apart on the baking sheets, then use the rounded end of a wooden spoon, or your thumb, to make a depression in each one. Don’t worry much if the sides crack; push them back together.
Bake the cookies for 13-16 minutes, rotating the baking sheets midway during cooking, until they are light-golden brown and the edges barely start to darken.
Remove from oven, and while they’re warm, press in to reinforce each depression with the end of the wooden spoon. Let them cool competely.
Warm the cream in a saucepan or microwave and set it aside.
Heat the water, 1 cup sugar, golden syrup, and salt to a caramel, gently swirling the pan only if necessary (to ensure it melt and cooks evenly) until it turns a nice golden brown.
Remove from heat and immediately whisk in the hot cream in a slow, steady stream.
Cool until warm and pourable, then add the chopped peanuts.
Spoon some of the caramel into each cookie, letting it set for about an hour, if you want to drizzle them with chocolate.
NB: For best results, use regular smooth peanut butter.
Cookies will keep in an airtight container, at room temperature, for 3 to 4 days. The unbaked dough can be rolled into rounds and stored in a heavy-duty freezer bag in the refrigerator or freezer, until ready to bake.
