Room temperature butter is crucial for best results in this recipe. Room temperature butter is cool and slightly firm to the touch. You should be able to push into the butter without breaking the butter stick. It should not be slimy, greasy, or melty, but it should be soft. Simply leave your butter out 1-2 hours before baking. If you forget, cut your butter into tablespoons. Place the pieces in the microwave for 15 seconds before flipping each piece over and microwaving for 10 seconds. Repeat this process in 5 second increments until your butter reaches the proper consistency.