Ingredients: Crumb layers 1 1/3 cups (188g) all-purpose flour 1/2 tsp baking soda 1/4 tsp salt 1 1/3 cups (120g) rolled old fashioned oats 1/2 cup (110g) packed light brown sugar 1/2 cup (110g) granulated sugar 3/4 cup (170g) unsalted butter, melted 2 tsp vanilla extract Filling 1 3/4 cups (273g) hulled and diced strawberries (from 12 oz whole) 1 1/2 cups (190g) diced rhubarb, sliced 1/4-inch thick …