No-Bake Chocolate Oat Bars

1 In a large microwave safe bowl, heat the butter, sugar and half of the cashew butter together for 1 1/2 minutes or until the sugar starts to dissolve into the butter. Stir and heat again for an additional 30 seconds. (The sugar doesn’t need to be 100% dissolved but you don’t want it grainy.) 
2 Stir in the vanilla, salt, and oats before pouring 3/4th of the mixture into a greased 8x8 baking dish. Make sure to press the oats down firmly! Save the last 1/4th for the top. 
3 In a smaller bowl, heat the chocolate and the last half of the cashew butter in the microwave for a minute, stir and heat again it necessary. 
4 Pour the mixture over the oats and spread it out evenly - reserving a little for a drizzle on top if you’d like! Top with the leftover oats and pop it in the fridge to set for at least two hours. Cut and serve!