Preheat oven to 400˚F.
For dough: Place flour, salt, baking powder, butter, and cream cheese in a food processor and pulse until a fine meal forms. While pulsing, add water and vinegar and continue to pulse until dough forms. Dump dough onto a clean surface and form into a disc. Tightly cover in plastic wrap and refrigerate for 30 minutes.
Lightly flour a clean surface and roll dough out into a 14” circle, about 1/4 inch thick.
Transfer dough onto a parchment lined baking sheet and sprinkle breadcrumbs over the surface.
Pour all the berries, lemon juice and sugar into a mixing bowl and toss together. Allow mixture to sit for 10 minutes.
Pour the mixture into the pie dough and fold the edges into the center about 1 inch.
Place the galette in the oven for 22 to 25 minutes.
Allow galette to cool for about 5 minutes, top with scoops of vanilla ice cream, slice and serve.