Strawberry Rhubarb Pie with Streusel Topping Recipe

Ingredients

• 2 ½ cups all-purpose flour, plus extra for rolling
• 1 teaspoon salt
• 1 tablespoon sugar
• 1 cup (2 sticks) unsalted butter, very-cold, cut into 1/2 inch cubes
• 6 to 8 tablespoons ice water
• 1 teaspoon apple cider vinegar
• 1 ½ pounds (8-10 stalks) rhubarb, trimmed and cut into 1-inch pieces
• 1 pound strawberries, de-stemmed, cut in half
• ½ cup sugar
• ½ cup brown sugar
• ¼ cup cornstarch
• 2 tablespoons flour
• ¼ teaspoon salt
• 1 lemon, zested and juiced
• ¾ cup flour
• ¼ cup rolled oats
• ¼ cup sugar
• ¼ cup brown sugar
• 1 teaspoon cinnamon
• ½ cup butter, cold, cut into small cubes
• 2 cups whipped cream (optional for garnish)