Blackberry Mascarpone-Ricotta Blintzes - Oregon Raspberries & Blackberries

Ingredients

• 1 cup flour
• Pinch salt
• 1 cup milk
• 2 eggs
• 1 tablespoon melted butter, plus more butter for cooking
• ½ cup mascarpone
• 1 cup ricotta or farmer cheese
• 1 egg yolk
• ¼ cup sugar
• 1 teaspoon vanilla extract
• 4 cups fresh or frozen Oregon blackberries
• 1 cup sugar
• Zest from 1 lemon
• 2 tablespoons lemon juice