Preheat & Prep (5 minutes)
Preheat your oven to 425°F (220°C) — this high heat helps the muffins rise tall.
Line a 12-cup muffin tin with paper liners or grease with non-stick spray.
Mix Dry Ingredients (2 minutes)
In a medium bowl, whisk together flour, baking powder, baking soda, and salt. Set aside.
Mix Wet Ingredients (5 minutes)
In a large bowl, whisk together melted butter, granulated sugar, and brown sugar until combined and slightly creamy.
Add eggs one at a time, whisking well.
Stir in sour cream, milk, and vanilla extract until smooth.
Combine & Fold (2 minutes)
Add dry ingredients to the wet mixture and stir gently just until no dry flour remains — don’t overmix!
Fold in chocolate chips (tossed in flour, if you did that trick).
Fill & Top (2 minutes)
Divide batter evenly among muffin cups, filling each cup almost to the top for tall muffin tops.
Sprinkle a few extra chocolate chips on top — trust me, it makes them bakery-worthy!
Bake Tall & Finish (15–18 minutes)
Bake at 425°F for 5 minutes, then reduce oven temperature to 375°F (190°C) and bake for an additional 10–13 minutes, or until a toothpick comes out clean.
Cool muffins in the tin for 5 minutes, then transfer to a wire rack.