Preheat oven to 350 degrees. Butter the bottom and sides of a 11-inch tart pan with a removable bottom and set aside.
To make the crust, add the flour, sugar and salt to the bowl of a food processor and pulse once to combine.
Add the butter, then process until the mixture comes together and forms large clumps, about 30 seconds to one minute.
Press the dough into the tart pan evenly around the base and up the sides. Use the flat bottom of a glass or measuring cup to help even and smooth it out.
Place the tart on a sheet pan and transfer the whole thing to the freezer or refrigerator while you make the filling.
To make the filling, add the almonds, ¾ cup sugar, flour and salt to the food processor (don't bother cleaning it out), then pulse until it forms a fine powder.
Add the butter and process until combined, then add the eggs and vanilla and blend until totally smooth.
Remove the tart pan from the freezer, then add the batter and spread it out into an even layer.
Arrange the cranberries evenly on top, then sprinkle all over with remaining tablespoon of sugar.
Bake for about 45 minutes to 1 hour, or until puffed, golden brown and a toothpick inserted in the center comes out clean (except for a little cranberry juice).
Allow the tart to cool to room temperature before serving. Store in the refrigerator.