✓ Mix the melted butter and sugar in a large bowl until well combined.

✓ Add the eggs one at a time, beating well after each addition. Stir in the vanilla extract.

✓ In a separate bowl, whisk together the cocoa powder, flour, and salt. Gradually add this mixture to the wet ingredients, mixing until just combined.

✓ Stir in the softened butter, brown sugar, milk, mini chocolate chips, and semi-sweet chocolate chips.

✓ Cover the bowl with plastic wrap and refrigerate for at least 30 minutes or up to 24 hours.

✓ Preheat the oven to 375°F (190°C). Line a baking sheet with parchment paper for easy cleanup.

✓ Scoop tablespoon-sized portions of the dough onto the prepared baking sheet. You should get about 24-28 bites depending on the size you choose.

✓ Bake for 15-17 minutes, or until the edges are set but still slightly soft in the center. The centers will firm up as they cool.

✓ Remove from the oven and let cool on the baking sheet for a few minutes before transferring to a wire rack to cool completely. Allow them to rest for at least 30 minutes to ensure the chocolate chips are set and the texture is perfect.