In medium bowl, combine flour, oats, nuts, sugar, cinnamon, and salt. Stir to blend.

In 10 inch skillet, melt coconut oil over medium heat. Remove from heat and stir in flour mixture until crumbly. Return to medium heat and stir until streusel is as toasted as you like. Transfer to bowl. Cool and store in sealed container at room temperature for up to 1 week.

In large bowl, combine berries, orange zest, and orange juice. Gently toss. Divide among 4 serving bowls. Sprinkle toasted streusel over top. Serve with dollops of yogurt.