I roast a turkey breast once a week

it's very easy
Glycemic index I hope this helps!

(from somewhere on EF)
Look for foods that are below 60 and try to avoid foods that are higher. If you have a medium or slow metabolism I would keep the number below 50. The core of your diet should be low glycemic.
But every so often don't be afraid to tickle your sweet tooth.
Legumes
Soy beans 18, canned 15 Lentils, red 26 Beans, dried 29 Lentils 30 Kidney beans 27-31, canned 52 Split peas, yellow, boiled 33 Lima beans, baby, frozen 32-34 Garbanzo beans 34, canned 44 Navy beans 39 Pinto beans 40-42, canned 47 Fava beans 80 Chick Peas 33-36, canned 42 Brown 38 Black beans 30 Black-eyed beans 43 Romano beans 47 Baked beans, canned 50-68 Lentils, green, canned 54
Root Vegetables
Carrots 51-92 Yam 51-53 Sweet potato 54-56 White Potato 70 Beets 66 Potato, steamed 68 Rutabaga 75 Potato, mashed 73-76 Potato, new, boiled 57 French fries 75-78 Potato, instant 84 Parsnips 97-101