Deep-dish Cranberry-Apple Crumble Cookies

Ingredients

• 1 large or 2 small apples, finely chopped
• 1 small mandarin orange, peeled and chopped (optional)
• 1/4 cup fresh or frozen cranberries
• 1/4 cup sugar (brown or white) or 2 tbsp honey
• 1/4 cup orange juice or water
• 1/2 cup butter (regular or brick-style plant butter), softened
• 1/2 cup packed brown sugar
• 1 tsp vanilla
• 1 cup + 2 tbsp all-purpose flour, divided
• 1/4 tsp salt
• 1/4 cup quick or old-fashioned oats (optional)
• 1/4 cup finely chopped walnuts, pecans or almonds (optional)
• Icing sugar, for dusting (optional)