Step 1

Grease a 8" x 8" casserole dish and set aside.

Step 2

Crush your Ritz crackers and set aside.

Step 3

Combine the butter and marshmallows in a large microwave-safe bowl and heat for 30 seconds, stir well, and repeat until completely melted.

Step 4

Stir the vanilla extract into the melted marshmallow mixture until fully incorporated, and then stir in the crushed Ritz crackers.

Step 5

Press the Ritz-marshmallow mixture into your prepared casserole dish and refrigerate for 2 hours or overnight.

Step 6

Cut into 9 squares and enjoy.