Put raspberries, honey, and lemon juice in a saucepan.
Heat to a boil, stirring to keep it from sticking to the bottom of the pan.
Once it starts to boil, turn the heat down to a simmer.
Simmer until it thickens (5-10 minutes), and when you pull a spatula or spoon through the jam, it should leave a clean trail and not fill back in with jam right away.
Once thickened, pull the jam off the heat, and allow to cool to room temperature.
Firstly, to make the cookie dough mill the flour. I like to use 1/3 of each soft white wheat, hard white wheat, and Khorasan Wheat (Kamut.)
Then, in a stand mixer, put 1 cup of softened (not melted, not cold) butter in, and start to beat slowly.
Once it appears soft, turn up the speed on the mixer, and keep beating the butter for at least 5 minutes. Make sure to scrape the sides as needed.
Once the butter has lightened in color, and increased in volume, then you know it has fully creamed. It should look silky smooth at this point.
Add salt, powdered sugar, and lemon juice (and zest if using) to the fully creamed butter, and mix until well combined.
Then, add the flour to the mixture, and mix until combined.
Cover dough, and let it sit in the fridge for 15 minutes.
Line a baking sheet with parchment paper.
Preheat oven to 350*F.
After the dough has chilled, and the flour has had a chance to absorb the liquid, then decide what size cookies you want. For larger cookies (like mine in the photo & video) I did 2 TBSP cookie scoop, so I could make a double thumbprint to make a heart for Valentine's Day. (You can make them smaller for more traditional thumbprint cookies, and you will get more than this recipe calls for. Also, the baking time may be a couple minutes shorter.)
Scoop cookie dough, and roll it in your hands to make a smooth dough ball. Place dough balls on the lined baking sheet about 2 inches apart from each other. (Also, if you want a sweeter cookie, you can roll these in granulated or turbinado sugar here.)
Press down in the center of the cookie dough with a wet thumb, or back of a spoon to create a little well.
Spoon the cooled jam into the wells.
Bake cookies for about 15-18 minutes. They will start to brown on the edges.
Let the cookies cool on the baking sheet for 5 minutes, then carefully transfer to a wire rack. They can be easy to break before they cool completely.
You can enjoy just like this, or dust with some more powdered sugar.