Instructions: In a large bowl, combine oats, boiling water and butter; let stand for 5 minutes. Meanwhile, dissolve yeast from hot roll mix in warm water. Add to the oat mixture with eggs and onion. Add flour mixture from hot roll mix; stir well, do not knead. Spread dough inot a 10 inch circle on a well greased pizza pan. Cover with plastic wrap coated with a non stick cooking spray; let rise in a warm place until doubled about 45 minutes. Beat egg and garlic salt; brush gently over dough. Sprinkle with onion and sesame seeds. Bake at 350 degrees for 25-30 minutes or until golden brown. Remove from pan; cool on a wire rack. Split lengthwise. Combine mayonnaise, mustard and horseradish; spread over cut sides of loaf. Layer with remaining filling ingredients. Cut into wedges.

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