Let the bread brown a bit. Then sprinkle half the chocolate over the bread and lower the heat to make sure the chocolate has time to melt without scorching the bread. Once the chocolate has started to melt, cover the chocolate with strawberries.
Using a spatula, move the toasted bread to a plate. Place the remaining bread, butter side down, on the still hot skillet and toast, repeating by adding the remaining chocolate onto the bread once warm.
Adapted from Alice Medrich's cookbook Sinfully Easy Delicious Desserts.