Preheat the oven to 350 F.
Add the dry ingredients to a large bowl and whisk together.
Melt the 1/2 cup of butter, not all the way to liquid form, just until the butter is very soft and partially liquid. I microwave it for 30 seconds and it turns out perfect.
Add the melted butter to the dry ingredients and blend together with an electric mixer. The mixture will look like coarse sand with some larger lumps.
Beat in the 1/2 cup yogurt, 3/4 cup milk, 1 teaspoon each of vanilla and lemon extract, 1 tablespoon of lemon zest, and 1 tablespoon of poppyseeds, until fully incorporated.
In a smaller bowl, add the 2 eggs. Beat with the electric mixer until lightly fluffy and frothy, roughly 60 seconds. You will want to rinse off the removeable whisk attachments before beating the eggs.
Add the beaten eggs to the batter and mix together with the electric mixer until fully incorporated and smooth.
Spoon the batter into prepared (sprayed with butter or vegetable oil spray) mini bundt cake pans. Fill the wells about 3/4 of the way full. Since I use the silicone molds, I put them on a large baking sheet before I add the batter to them. It's easier to get them in the oven that way. If you are using metal bundt pans, you wouldn't have to do this.
Bake the cakes for 25 minutes, or until a toothpick inserted in the thickest part of a cake comes out clean or with a few moist crumbs. Remove from oven and let rest for 10 minutes before removing from the molds onto a baking rack to continue cooling off. Although, you really ought to try one straight from the oven. So delicious!