Place the cauliflower florets onto a foil lined baking sheet. Toss with olive oil, cardamom, and season well with salt and pepper.
Roast in the oven for 25-30 minutes, turning over occasionally, until the cauliflower is tender and golden brown on all sides.
Heat 1 to 2 teaspoons of olive oil in a nonstick pan over medium low heat. Add the breadcrumbs and toast until golden brown. Set aside on a paper towel to drain any excess grease.
Once the cauliflower is done adjust the seasoning with salt if needed. Garnish with breadcrumbs.