Grease small baking dish (8” round or square) with butter. Toss rhubarb with white sugar, juice and zest, and spread in baking dish.
Put butter, brown sugar, flour, cinnamon, and salt in food processor and pulse for about 20-30 sec until it looks like small peas and just begins to clump together. Add oats and pecans and pulse just a few times to combine.
Crumble the topping over rhubarb and bake until golden and beginning to brown, 45-50 min.
Serves: 4 Total Cook Time: 50 min.
Source: NYT Cooking app