Make delicious brownie cupcakes with this easy, generations-tested recipe that calls for 6 ingredients. It’s gotta be good if it’s grandma’s recipe!
Preheat the oven to 325 degrees F (165 degrees C).
Line 18 muffin cups with paper liners.
Melt butter and chocolate chips in a saucepan over low heat stirring until smooth 3 to 5 minutes.
Remove from the heat and let cool 10 to 15 minutes.
Beat sugar and eggs in a mixing bowl with an electric mixer until thoroughly combined.
Mix in flour and vanilla.
Fold in cooled chocolate mixture until smooth.
Spoon batter into the prepared muffin cups filling each 1/2 full.
Bake in the preheated oven until a toothpick inserted into the center comes out clean or with a few moist crumbs about 30 minutes.