Place 1 cup of the raspberries in a food processor; cover and process until pureed. Strain raspberry mixture through a fine-mesh sieve. In a small bowl, combine the raspberry puree, honey, and shredded lemon peel.
Divide cottage cheese among four individual bowls. Top with raspberry-honey mixture; gently stir once or twice. Top with the remaining 1 cup raspberries and the sunflower seed kernels. If desired, garnish with lemon peel twists.