Over medium high heat, melt 3 tablespoons of butter and allow it to start to brown.
Saute the rhubarb, strawberries until they become soft.
Add the sugar and orange zest and allow to simmer.
Whisk together the orange juice, corn starch and vanilla extract.
Add the slurry to the strawberries and rhubarb. Allow to thicken
While the fruit is cooking make the crisp topping. Combine the remaining butter, oats, almond flour, brown sugar, cinnamon, nutmeg and salt to form a crumble.
Spread the crumble over the strawberry rhubarb crisp and bake at 400 for 30 minutes or until the skillet cobbler is bubbly and brown.