Tallywell.

Brazil nuts vs Walnuts

Both count toward 30 plants a week.

Brazil nutsWalnuts
Protein · per 100 g14.3 g15.2 g
Fiber · per 100 g7.5 g6.7 g
Energy · per 100 g659 kcal654 kcal
Protein · per 100 kcal2.2 g2.3 g
To hit 30 g protein210 g · 1383 kcal197 g · 1291 kcal

Bold marks the better side of each row. "Per 100 kcal" answers the density question — which food delivers more protein for the energy it costs. Portion row is computed live from the same USDA base values shown on each food page.