1 pkg. devils food cake mix
1 c. brown sugar
1/2 c. cocoa
2 c. water
2 c. mini marshmallows
1 c. pecans, chopped

Combine brown sugar, cocoa and water; mix well. Pour in 9 x 13 inch pan. Place marshmallows evenly on top. Make cake following package directions. Pour over marshmallows. Bake at 350 degrees for 50 minutes. Cool and cut.