This is just a draft; I have yet to try it. Using the amounts in brackets should theoretically make one loaf with approximately 70g fibre. Forgive me if I got the percentages wrong; I'm still trying to switch from measuring in cups.

Ingredients
58.75% (240g) All purpose flour
2.08% (1 tbsp) Vital wheat gluten (80% protein)
39.17% (160g) Dark rye flour
77.11% (315mL) Water
0.88% (1.5 tsp) Yeast
1.79% (1.25 tsp) Salt
4.99% (1 tbsp) Honey
3.43% (1 tbsp) Butter
3.00% (85g) Wheat bran

Method (written for one loaf)
Sponge
1.2g yeast
125mL water
120g AP flour

Don't make bread when you're sleep deprived! Mix everything but the yeast and salt into the dough before letting it autolyse!

I'm making potato rosemary rolls again but incorporating the autolyse and cool rise techniques...