grain roasting?

[volstag]

I'm planning on brewing a Vienna/Centennial SMaSH this weekend, and I want to roast some of the malt to get some color in my brew. I don't have a grain mill, and usually crush my grain at my LHBS when I buy it. My question is, can I roast crushed grain or am I better off roasting it whole and then crushing it with a rolling pin.

My recipe in case you wondered

12Lbs Vienna
1lb Vienna, Roasted 1/2 hr @ 350

.5 oz Centennial 60 min
.5 oz Centennial 30 min
.5 oz Centennial 15 min
.25 oz Centennial 5 min
.25 oz Centennial 0 min

Nottingham or US-05 yeast

OG 1.047
IBU 35
ABV 4.6%

any thoughts or suggestions?

 

[Suthrncomfrt1884]

Grains need to be roasted while they're still whole.

 

[volstag]

ok thanks, any thoughts or suggestions on the recipe?