Vegan Peach Cobbler Milkshake

Name: Vegan Peach Cobbler Milkshake
Ingredients: 4 ripe peaches, sliced; 1 tablespoon lemon juice; 2 tablespoons Peach preserves, preferably natural, no sugar added; 1 tablespoon coconut oil; 1 cup light coconut milk; 1 ripe frozen banana; 1 teaspoon pure vanilla extract; 1/2 teaspoon cinnamon; dash nutmeg; 2 tablespoons graham cracker crumbs (check label to ensure it is vegan); 1 tablespoon old fashioned oats; 3 pecans (optional); ice cubes