Prep and preheat. Preheat your oven to 375°F and line baking sheets with parchment paper or silicone baking mats.
Cream the fats and sugars. In a large bowl, beat the butter, shortening, granulated sugar, and brown sugar together until light and fluffy (2–3 minutes). Add eggs and beat again for another 2–3 minutes until smooth and fully combined.
Combine the dry ingredients. In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add the dry ingredients to the wet mixture and beat until just combined.
Add the oats. Stir in the quick oats until evenly distributed throughout the dough.
Scoop and bake. Use a tablespoon-sized cookie scoop to form dough balls, then roll them into 1-inch balls with your hands. Place them 2 inches apart on prepared baking sheets.
Bake and add kisses. Bake for 10–12 minutes, just until the edges start to turn golden. Remove from the oven and immediately press one Hershey Kiss into the center of each cookie. Let the cookies cool on the baking sheet for a couple of minutes before transferring to wire racks to cool completely.