There are a couple ways to make chewy brownies vs. cakey or fudgy pumpkin brownies. The first is to use a combination of vegetable oil and butter, the second is to slightly underbake your brownies by 1-2 minutes, and the third is to put them in the fridge after they've been baked for up to 1 hour. Then you will get a chewy dense brownie that will satisfy your sweet tooth!