Step 1: Beat together butter and sugar until light and fluffy
Step 2: Beat in eggs one at a time, then add vanilla extract
Step 3: Mix in the dry ingredients until just combined
Step 4: Toss frozen raspberries in flour
Step 5: Scoop batter into liners then add berries. Bake at 350°F for 20 minutes
Step 6: Make raspberry buttercream while cupcakes cool
Frost the cupcakes!