Wash and dry the strawberries. Remove the stem. Chop the strawberries into small pieces. Set aside.

Preheat the oven to 180 degrees Celsius/ 350 degrees Fahrenheit. Line a baking dish of about 23x23 cm/ 9x9 inches with parchment paper.

Chop both kinds of chocolate finely and regularly, cube the butter. Place the chocolate and the butter in a small saucepan. Heat very gently while stirring often. The mixture should never get too hot or come to a boil. If you notice that the mixture might get too hot, remove the saucepan and continue stirring off heat until the chocolate-butter mix is very smooth. Set aside until you prepare the rest of the ingredients, it should cool slightly.

Place the eggs, sugar, and the flour mixed with the baking powder and a pinch of salt in a bowl. Mix well.

Slowly, start adding the melted chocolate mixture. You can add an extra small handful of chocolate chips to the mixture if you wish.

Pour the batter into the prepared dish. Sprinkle the strawberries all over the brownie batter and press them very gently into the batter.

Bake for about 25-30 minutes. The baking time depends on your oven and on the strawberries as well. They contain a lot of water and, depending on that, the brownies might need a bit longer to be ready than usual brownies do. When ready they should be set around the edges and still only very lightly jiggly in the middle. If the batter seems too wet still, allow some more minutes and check again.