Step 1

In a medium bowl, mix together flour, brown sugar, cinnamon and salt.

Step 2

Add the butter.

Step 3

With your hands, squish the butter into the flour/sugar mixture until it comes together.

Step 4

You will know it is thoroughly mixed when the mixture stays together when squeezed in your hands.

Step 5

Mix in the nuts if using.

Step 6

To add to your dish, Squeeze in your hands and then crumble on-top of your item.

Step 7

If baking something that takes longer than 30 minutes, after 30 minutes has elapsed, gently cover with foil to prevent over browning.