Instructions: Melt chocolate and butter together (Stir constantly over low heat, or use microwave). Cool slightly.

Beat eggs, sugar, and vanilla in large mixer bowl at high speed for 10 minutes. Blend in chocolate mixture at low speed. Add flour, beating just until blended. Stir in nuts. Spread in greased 9x13 inch pan.

Bake at 375 degrees for 35 to 40 minutes. Done when edges start to brown. (Deciding when its done is the tricky part.) Cool in pan.

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