Death Muffins!

As you summon a pink vanilla frosted muffin, encrusted with a variety of colored sprinkles, with a stick of red dynamite for a candle, with the fuse sticking upright, sparking, you can choose a point in a 120-ft radius. As it streaks to its target, in full brilliance, it explodes on contact. Every creature in a 15-ft radius must make a dexterity saving throw against your spell DC.  On a failed save, each creature takes 4d12 + 3 force damage from the shockwave of the blast. Each creature also has a 50 percent chance of taking 15 fire damage. On a successful save, halve the force damage, with a 25 percent chance of taking the 10 fire damage.

At higher levels, this spell deals an extra 1d12 force damage. For example, at 4th level, it deals 5d12 + 3 force damage.